Sounds like Riu is great for AI in Cancun, esp Riu Cancun and Riu Palace, but we are on a budget and considering Riu Caribe (others are a bit out of our price range).
If staying at Riu Caribe, do you have full access to the grounds and restaurants at the other Rius?
Any feedback specific to Riu Caribe? Is it too far away- or will that not really matter? We'll be going out every night to the clubs... and want to have a fun atmosphere at the hotel during the day too.