1.) Most of the rental trucks are manual transmission. Some places can get automatics for an extra charge (like $154 - $200 for the week).
2.) Do not leave any sort of valuables in your trucks; divers' rental trucks are sitting ducks for petty theft.
3.) Hit Washington-Slagbaii Park up in the day when the lighting's good for photos.
4.) Wear thicker-soled boots like SeaSoft Sunrays, because that jagged ironshore can damage your feet through regular thin-soled scuba boots.
5.) Some favorite restaurants: Wil's Grill, City Cafe', Bon Appetit, Cactus Blue.
6.) Some favorite dive sites, roughly north to south: Kapata, Tolo, Oil Slick Leap, Andrea (I or II), The Cliff, Buddy Dive's house reef, Hilma Hooker, Angel City, Windsock.
7.) Get some apples at the store to feed wild donkeys you run across driving around the island. Also for iguanas and Bonaire whip-tail lizards (which in some places will eat out of your hand if you're patient and have some broken up apple in it).
8.) Since I'm pretty much limited to 80 cf aluminum tanks down there, I wish I'd known about
this DiveRite Travel Stage Strap device, which along with an extra reg. & SPG should let me dive 2 tanks at a time next trip (hoping to try this).
9.) Food is expensive; plan to load up at the grocery store (Warehouse Bonaire may be your best bet on price, Van Den Tweel for selection, but a lot of VDT's isn't in English) on soda & food so you can eat in for breakfast & lunch & keep costs down. Peanut Butter & Jelly Sandwiches, cereal, that sort of thing.
10.) Windsock is a good site for night diving, as are some others. The Buddy Dive house reef is also good.
Richard.