So then you definitely must not have talked to Jamy yet (starchild)! Hers was a huge party, and continued, or dare I say got a little crazier, on the boat. People definitely danced like crazy at my wedding, and Jamy's as well - and I know all of the weddings I've seen I saw people shaking their stuff on the dance floor at Caletas. Have you seen my pics? Jamy's? I honestly wouldn't let this be a concern ... your reception is what you make it. And I'm fairly confident that the other Caletas brides will back me up here! You can definitely make your wedding a huge party - as cazy as you want to!
Another thing to consider, I don't know that drunken, grinding, sloppy dancing is what a professional photog is going to focus on - so perhaps that's why you're not seeing a ton of that in the professional photos. But here are some of mine ...