... as a gorilla.
I hate to offer any advice since I live a life of perpetual chaos but I've always found it best not to make any big or medium sized decisions while changing meds. And even the small decisions can be tricky. Just say "no" if someone offers you a "long island" iced tea, or worse, mushrooms. Powdered Navy style "scrambled" eggs and bloody marys for breakfast are a bad idea too; with spam or without.
Don't get sunburned in Hawaii, last time I was there visiting family, sunburn turned a perfect trip into something just a little bit less than perfect. I've always got to remember, if I'm not wearing clothes, wear plenty of sunscreen. Put it on at least half an hour before and let it soak in. Especially your dangly bits and your butt. Replenish liberally. Sunscreen is bad for the reefs but I don't know what else to tell you unless you decide to wear a full body suit of some sort. I like to think if the sunscreen has soaked into my skin it's not so bad for the fishes and coral.
I can't tell you anything about the too much sleep part of your troubles. Whenever I'm not "right in the head" my very vivid nightmares make me afraid to sleep.
Bring a sunglasses to Hawaii, or buy some cheap ones there. Sit on the beach and watch sexy people without moving your head. You never know, one of 'em might hit on you. And even if they don't, you still watched sexy people.