don't bother to 'catch the redeye' flights to Bonaire, you'll be too exhausted from the overnite travel to want to dive the next morning, you'' arrive too early for your rooms to be ready, so you'll hang around waiting for other guests to leave, then waiting for housekeeping to prep the rooms for the new arrivals, so you won't be able to catch some desperately needed sleep from staying up all night doing the red eye thing, and by the time you get to move into your room and unpack and maybe catch a nap, you'll have missed the required new diver orientation/check out dive scheduled for thate day so you won't be allowed to dive until the next day anyway AFTER you attend the next day's orientation dive 'window'. That whole 'catch the redeye' and start your diving vacation early is a bunch of silly propaganda!
Be prepared for paying as much for a liter (quart) of gas as you pay stateside for a Gallon of gas!
Restaurant service is VERY, VERY slow! Eating out will substantially reduce you dive time, so cook in your room and bring food with you.
Bring high quality thick soled booties or you'll be sorry...Bonaire is very rugged ironshore diving. Prepare to do a recon at most dive sites for how you plan to get to the water and back out of the water, especially while wearing all your dive gear, most entry/exits are tricky and the potential for injury due to slipping/falling is high.
Don't try to scrape the rust off of the dive truck you'll be issued, the rust is actually what's holding your truck together.
Dutch groceries are somewhat different than what you may be used to in the states. The tastes of things in some cases was very different than what I was used to in the states, so don't be surprised.
At night not a bad idea to stock up on NITROX tanks (late each evening I'd make runs to the tank farm and stockpile tanks in our room so we'd be covered the next day as often the resorts can't keep refilling tanks fast enough to keep up with demand during the day)
Be prepared to be a pack mule, you will expend significant energy constantly loading multiple tanks/gear sets/weights in and out of your truck, which is tedious, especially in the hot sun...yet another reminder of why I GREATLY prefer liveaboards and haven't returned to Bonaire for some years now.
There's lots of sun and very little shade so be prepared with water, sunscreen.