As far as I can tell, there is no difference between the two. They're two halves of the same resort. Only difference is which travel companies book which half. They share the pools, beach, restaurants, casino, everything. Just one side of the pools or the other. I think someone said the decor might be different on one side, but it's more a matter of which tour company you're booking with. We're going to Ocean Blue, never had the choice of Sand.