There are several casinos in Cancun. This is a new development in Cancun and the laws here about casinos are constantly changing.
Most, if not all, casinos in Cancun are card-less. They have slots and video machines, some even have very lifelike and voluptuous virtual dealers.
The casinos do not compare to casinos in the states, but if you are looking to spend a couple hours playing, I would suggest Dubai Palace. Its super handy if some of your family want to shop next door at the new are large Plaza Las Americas mall. Dubai also offers a really good buffet for a good price. All the taxi drivers know where it is located.
I will try to update this list and find out the status of Playboy Casino.