Final question on SCC for all you experts. How is their equipment. The kids don't have BC's, and ours were so old, I junked them. We recently dove off a cruise ship (Don Foster in Cayman and Dive house in Cozumel.) I was very very impressed with the quality of their BC's (we had our own regulators.) I would assume I will be equally happy with SCC? If you have used their rental equip, please let me know.
Standard workhorse and reliable stuff. Not many frills, but you don't really need many.
Unless you want to get your kids in the habit of relying on someone else to regulate their dive time (not a good practice, in my opinion), I strongly recommend you purchase or rent computers. Tables generally aren't adequate for the two stage diving (80-90 ft for a while, then ascend to 30 or so for the remainder of the dive) normally done in Cozumel. I didn't ask about rental computers, so I don't know what they have available.