Like herman, we are Bonaire-aholics (ok, maybe it's NOT a real word...
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He's given you some of the best spots to dive. We also enjoy Karpata, Angel City, and if you can get permission, The Salt Pier.
Don't forget to try the ice cream at Lovers; best thing in the world to take that salt taste out of your mouth after a long hard day of diving.
Raining Fishes is a good restaurant; not the cheapest, but I think you do get value for your money, as they have some amazing seafood dishes.
There is also a little walk up place on the main drag called Julio's that gives you HUGE portions of local cuisine (like stewed chicken with rice, etc.) for very reasonable prices. And of course there's always Wattaburger for fast food with a decidedly Caribbean twist.
Washington-Slagbaai Park is very neat, but make sure you have a vehicle with good suspension, because that road is not in the best shape.
BTW, you can also mtn bike & do a kyak tour of the mangroves.
Have fun!