I'm lurking as I was considering booking the Plaza for my family but it's considerably more expensive than Iberostar Cozumel (our favorite diving AI, so far). I'm having a hard time justifying the cost of the Plaza over IB Coz, esp since the Plaza appears to have a number of exclusions (espresso drinks, ice cream, etc. outside the buffet is charged to your room). I was also surprised at the cost of AI at Divi where adding AI for 2 adults 2 kids is an *additional* $400/night (my nightly rate at Iberostar in May).