There are some dives you will be semi-okay on ... meaning the very easiest dives, which are very few. I have been to Bonaire 7 times and going back in November - my boots have basically a tennis shoe sole and on some dives, even that is not enough (Oil Slick Leap, Karpata, La Dania's Leap, Rappel, Vista Blue, and more).
Some of the dives you have to walk across iron shore to get to the entry. Iron shore rock is killer on the feet even with thick soles. If you are "GI Joe" you might be okay; if not, I would invest in some good boots (not short!) with tennis shoe sole. You will be happier.
Alot of the dives appear to be easy entry - until you hit the big rocks/boulders that move around when the waves go in and out!
... and never, never, ever put your fins on first before you enter the water and never, never, ever try to exit the water with your fins on!
We put our fin straps on our wrists and wait until waist deep water to put them on and take them off in waist deep water before exiting. If your fin straps don't stay attached (like Mares Volos), you have to hold them in your hands, or find a way to clip them on. Trust me, diving will be easier.
... all of that said, I hope you have a great time!
... and if you like pizza, don't miss going to "Pasa Bon", but make reservations!