Not at this time. But certainly that's something we'd consider in the future. 

Remember, a lot of people have trouble with AI without the periods, thinking we're talking about some guy named Al. And it's harder if there's not a spelled-out first reference.

Also, just because you and I understand AI on first reference doesn't mean my mom, my sister, and many other readers are as attuned.

Yes, in our style it's acceptable on all references.

You're free to abbreviate the term. But we won't. General readers would have no idea what that means. And as you probably know, we aim to avoid most abbreviations and acronyms.

Lowercase no-see-ums, according to both Webster's New World College Dictionary and Merriam-Webster.

We never capitalize titles when they follow a name. Only when they come directly before a name.

Yes, capitalize It's in a composition title. And I agree with you that They're is correct. I also question the use of the exclamation point, which lends a sort of light tone to what appears to be a serious topic.

There's a line between following AP style to the letter, and doing what's necessary to keep the customer satisfied (within reason).

It's true that we don't say 7:00 is objectionable. But when we say our style is 7 p.m., it's implied that our style is not 7:00 p.m.

The good news: She gave the option of including p.m. and I think that's a reasonable option. In our heart of hearts, we think the p.m. is pretty apparent (the presentation wouldn't start at 7 a.m. following a 6:30 p.m. dinner). But including the p.m. dresses up the stand-alone 7 a bit and wouldn't strike most people as odd. 

So how about: 

The event will begin with a social hour and cash bar, followed by dinner at 6:30 p.m. Cavigelli’s presentation will start at 7 p.m., followed by a live auction at 7:30 p.m.

Or if the organizers are really in love with :00, then go with it. We need flexibility ...

Yes: Join us from 9-11 a.m. But, we also are just fine with no hyphen. See the end of the below section from the times entry. So you easily could write: Join us from 9 a.m. to 11 a.m.

Use figures except for noon and midnight. Use a colon to separate hours from minutes: 11 a.m., 1 p.m., 3:30 p.m., 9-11 a.m., 9 a.m. to 5 p.m.

This section of the time element entry can be applied more broadly to months:

Avoid such redundancies as last Tuesday or next Tuesday. The past, present or future tense used for the verb usually provides adequate indication of which Tuesday is meant: He said he finished the job Tuesday. She will return Tuesday.

So typically, if the time period is within a year, we would say simply He sold his goods at the show in January or She will sell her goods at the show in January.

If it's beyond a year in either direction, add the year. Or if there is any chance for confusion in the context, include last or next.

I'd do it with the number and the percent sign. It's a gray area, and we don't cover that specific question. But I think it reads more easily with the 63% after the colon rather than writing it out. 

Write it out at the start of a sentence. From the numerals entry:

AT THE START OF A SENTENCE: In general, spell out numbers at the start of a sentence: Forty years was a long time to wait. Fifteen to 20 cars were involved in the accident. An exception is years: 1992 was a very good year. Another exception: Numeral(s) and letter(s) combinations: 401(k) plans are offered. 4K TVs are flying off the shelves. 3D movies are drawing more fans.

Interestingly, I don't think I've ever seen that question. It took some consideration to come to this conclusion:

Generally, we use words for ordinals ninth and under.  But there are exceptions, such as 9th Precinct, 3rd Congressional District. Presumably the editors who came before me settled on that style since political districts in general take figures. And we say to use figures for ages. Thus, I'd say 5th birthday for the age. 

These fall under the category of essential or nonessential phrases. Read the full entry for details.

In your first example, the answer depends on whether Gucciardi has one poem, or more than one. If he has only one poem, the name of the title is nonessential and thus the comma is used. If he has more than one poem, the name of this one is essential and there is no comma in that construction.

In your second example, it depends on whether he has only one conversation with April. In that case, use the comma.

If he has more than one conversation with April, no comma.

I know this can be confusing. But I think the entry spells it out reasonably well.

Could you possibly let the people outside your control know that the AP Stylebook editor strongly (VERY strongly) recommends against this use, and can't find support for it in major dictionaries? There's a distinct fingernails-on-chalkboard effect. I could go on. And on and on.

OK, but if you have to use it, I guess I'd choose the first option. Definitely not the second. Maybe the third. It's hard to say what correct usage is for something that's not correct usage however you do it ...

It's a judgment call. In your example, I'd question whether severity and frequency is really a single idea. If  it is a single idea, indeed you would use a singular verb. But they strike me as separate ideas. I also think it could be argued either way. Definitely a judgment call!

The punctuation is correct. But the wording implies that the Americans who struggle are costing the U.S. economy. I'm not sure you want to blame the victims.

Also, we'd  avoid starting the sentence with a number that needs to be written out.

Instead: Some 77 million Americans struggle with poor health literacy and with making sound health decisions. That costs the U.S. economy $238 billion each year.

And I assume you'll explain why those issues are causing added costs?

How about rephrasing to avoid that awkwardness. Really, it's impossible to read no matter how many hyphens you do or don't use. Instead: Naloxone, the opioid-overdose antidote, .... 

It's a matter of style; there's no right or wrong. And when there is general guidance, sometimes it's best to deviate from that general guidance in some cases.

We do say the prefixes over and under generally don't take a hyphen. But to me, the terms overinvoicing and underinvoicing are hard, if not impossible, to read.

I'd use the hyphen. For the sake of the readers.

We much prefer chocolate. For the sugary treat that you're asking about, Webster's New World College Dictionary prefers the two-word version:

jelly bean  a small, bean-shaped candy with a soft, jellylike center and a hard sugar coating: also written jellybean n.

Our style is PFAS for both the singular and plural. Here's the entry.

Safe to say that there are as many who prefer the two-word version as who prefer the one-word version. Merriam-Webster, a dictionary separate from Webster's New World, prefers two words. So does American Heritage Dictionary.

I don't know why the decision was originally made to go with two words; it was before my time on the Stylebook team. Since then, we have revisited a number of times and each time decided to stick with two words in the absence of an overriding reason to change and given the great support for the two-word version.

We will continue to discuss periodically.

The first entry you note is indeed a Stylebook entry. As you note, we use the hyphen.
The second entry is actually from Webster's New World College Dictionary, which you can get as part of your Stylebook Online subscription. The dictionary doesn't use the hyphen.

You can choose which version you prefer. Both are correct; they are just different styles.

Thanks for asking! We are revising our style to use dataset, one word, in all uses. We've updated the sections that you note.