When we suggest doing a Search for prior threads, be mindful we enjoy talking about Bonaire and don't mind repeating it, but there's a lot of good, detailed knowledge in older threads. Would be a shame to miss something helpful. A few thoughts:
1.) When shore diving, walk in & out to waste deep water, fins off. You will need open-heel fins, not full-foot fins.
2.) Unless you arrange early & pay extra, the trucks are manual transmission (stick).
3.) Bonaire offers a number of 'one stop shop' 'turn key' solutions - resort, dive op., & sometimes rental truck (in the case of Buddy Dive Resort, even airport transfers when you arrive & leave). Buddy Dive Resort is a good overall choice. Some people like Hamlet Oasis (Dive Friends is the operator), or Sand Dollar Resort (choice of Dive Friends or Bonaire Dive & Adventure; latter has use of onsite pier but you don't need it). Some operators have onsite boat diving, but some of us go a few trips before we even get on a boat. Dive Hut is a budget option (not the only one) not fronting the ocean. Bamboo Bali has been spoken well of but it's distinctive in atmosphere from what I'm told. If you care to rent a place, check out
Vinibu (Diver Vince is on this forum). I've not stayed there but it looks really nice. Divi Flamingo is a resort that's near town, if walking there matters.
4.) If you aren't nitrox certified, get it. Nitrox is often a free upgrade.
5.) Plan to pack the back of your truck so when you dive, nothing is left in the truck except scuba tanks. Petty theft from unattended vehicles is a concern; mainstream advice is leave truck doors unlocked & windows down while diving, so nobody breaks a window to 'shop.' Shore diving is such a fixture on Bonaire that people know when divers go in the water the truck is likely abandoned for 45 minutes or so.
6.) Bring bug spray; mosquitos will go after your legs in the evenings when you eat out.
7.) Notice whether your credit card charges foreign transaction fees. They add up.
Richard.