Style question -- Hawaii or Hawai'i?

I've seen this both ways. Hawaii is, of course, the traditional spelling but Hawai'i seems to be gaining a lot of usage over the past few years (including in the Honolulu papers I've read).
Is there a standard, AP style for this or is either way acceptable?
I'm asking because we ran a Hawaii Bowl logo today that uses the Hawai'i spelling, but our headlines say Hawaii. If I'm confused, I'm sure the readers are.

 

I don't know, but please see the graphics department about a proper map of Hawaii.

 

There it is again, the anti-okina bias. Why is the mainstream media always hating on glottal stops?

 

Very nicely done.

 

1. Honolulu papers run Hawai'i because that's how it's preferred on the island.
2. AP also calls the Knicks power forward "Amare Stoudemire," avoiding the glottal stop in "Amar'e."
3. Your readers will not notice this. They're not paying that much attention.

 

I'd like to see the readers who are confused, and perhaps thinks there is a Hawaii Bowl, but also a Hawai'i Bowl, which also features the same teams on the same day. Won't they get tired? Which one should I watch?

 

I meant confused as in the sense of, "Huh. That's odd. I wonder why that's spelled like this here, and this here. Ha Ha! The newspaper people don't know how to spell!"
More than, "Oh no! There's two bowls! Which one do I watch!?"

 

Our writers have enough trouble with local names. So I'm not getting into Hawaii/Hawai'i.

 

Am I stupid for not knowing that was a glottal stop?

rb

 

It is also known as a voiceless glottal plosive. Does that make it better or worse?

 

I'm so naming my band Voiceless Glottal Plosive