I'll start off the long parade of recommendations:
- First off, TONS of info can be culled from the forums at BonaireTalk
Bonaire Talk - The place to discuss everything and anything about Bonaire! Spend some time perusing the postings there.
- My favorite dive sites: 1000 Steps, Karpata, Ol' Blue, Alice in Wonderland, The Cliff, Hilma Hooker
- My favorite night dives: Buddy's House Reef, Windsock
- Favorite critters: Seahorses, spotted eagle rays, turtles, squid, garden eels, tarpon, filefish, Caribbean slipper lobster, lettuce seaslug, boxfish, cowfish, porcupine pufferfish, tang gangs
- Consider buying an underwater camera. The Canon "A" series is fairly affordable - A720 camera + Canon underwater housing = about $370.
- Don't count on leaving anything of value in the truck while you're diving. Typically, people in our group would only leave behind cheap flipflops, old t-shirt, stinky towel, hat, cheap sunglasses, a bottle of water, and a granola bar. Do you see a pattern there? The car rental agencies suggest that divers leave their truck windows rolled down to prevent thieves from having to break the windows to get your stuff. Petty crime is an issue there, but the island is otherwise quite safe.
- Hard-soled dive booties are a good idea. The shore is quite rocky in places.
- Bring a save-a-dive kit containing o-rings for yoke tank valves. I replaced a number of those suckers during my last vacation there.
- Don't leave any expensive dive gear outside overnight. At the very least, lock up your dive computers and regs.
- Arrange to do a DM-led night dive at the Town Pier. Very colorful under there...and when we went in Dec 2007, we saw 2 seahorses!
- Take advantage of the free nitrox upgrades. Most of the dive ops include this with a weeklong shore dive package.
- Don't sign up for a multi-day boat dive package. Klein Bonaire is nice, but the shore diving is so good that you really won't be missing much.
- If you have kitchen facilities and don't mind cooking, explore the various grocery stores in the area. This can be a good way to stretch your food budget for the week.
- I realize that others will disagree, but Bonairean goat ain't that tasty.
- Restaurants that I like: El Fogon Latino, Cactus Blue, Pasa Bon Pizza, Will's Tropical Grill, El Fogon Latino (yes, I realize that I mentioned one of them twice)
- Restaurants that I didn't like: (I'll let others address this.)
- Enjoy diving on your own schedule.
Have fun and dive safe.