Here is a little info on Bonaire weddings. Scroll down to the bottom of the page.
http://www.buddydive.com/rates.html#wedding
http://www.buddydive.com/rates.html#wedding
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socaldiver once bubbled...
In searching the web I have found 3 places "stateside" that perform this ceremony. 1 place in Dallas, and 2 in the Florida area.
drizzt117 once bubbled...
I would steer away from Jules Underwater Hotel which was mentioned. The rooms are small, the viz is around 10 ft at best, and costs way too much. Good luck and congratulations.