We went to Mr.Sanchos in 2010.
Booked through Cozumel Water Sports online-you pay $5 bucks per person I think to book-then pay the balance at the resort.
I think it was $45 for adults, 25(maybe a little less) for my son who was 6 and my 4 year old was free. (it said under 4 free, but when I entered her age as 4 it came up FREE-not sure if this is the same still or not.
http://www.cozumel-watersports.com/excursions/mrsanchosallinclusivebeach.html
All you can eat off the menu (minus their Lobster dish and maybe one other item) All you can drink Sol beer and tropical mixed drinks (no shots) and lemonade or something for the kids.
You get one server. The all inclusive stuff has to be done with him. If you go to the bar yourself-you will have to pay for that.
You get chairs on the beach.
There are small snorkling areas as well-husband didn't see a whole lot.
They have water toys (slide, bounce, climbing stuff) that you pay extra fee for.
I think they also have horseback riding, jet ski, banana boat activities as well that are extra. We didn't do any of the extra stuff.
We had a great time here. And we went in March.
There were spring breakers. And they do play Music that is kinda dance clubish, but my kids didn't seem to notice what words were being sang-they were having too much fun.
They have gift shops on premises-we forgot a sandpail and easily bought one for a few bucks.
Cab ride was easy. Just say you want to go to Mr.Sanchos-cabs waiting to take people back to ships all the time so whenever you are ready to go someone is there.
We would return if we went to cozumel again.