From Cuan Law's website:
"Three dives are planned each day, including a morning dive before or after breakfast, an afternoon dive after lunch and a night dive. In between there is time for kayaking, Hobie Cat sailing, snorkeling or even more diving if you wish. When the dive bell rings to announce the next dive, interested divers gather at the aft deck for a briefing."
How many dives/day do you wish to do?
What does your wife like to do?
Part of the reason I ask is because, considering the cost involved, there's an option that on the face of it looks less desirable, but once you mull it over might have some appeal. Just in case, I'll throw it out there.
A mainstream cruise, like Carnival, Royal Caribbean (what we do), Norwegian Cruise Line or Celebrity Cruise Line. Fewer dives scattered over a variety of destination (I think of it as 'appetizer plate' diving), but your dining & topside activity options are strong. Southern Caribbean itineraries departing out of Puerto Rico can be nice, and some of the smaller ships (e.g.: the Jewel of the Seas) can get you pretty cheap prices. I like sailing out of Fort Lauderdale because Southwest flies there & doesn't charge us baggage fees, but your mileage may vary.
If it were me, I'd probably prefer the Cuan Law option, right up to the point I got a look at the price. Then, I might holler 'Honey, would you like to go on another cruise?'
Richard.