If you read my review for the Carnival Paradise, you saw that a tour guide at the pier convinced us to go with him for the day. We really enjoyed him and the tour, so thought I'd give you more info about him.
His name is Javier Lomba, 30 something, and a licensed tour guide. He has a 12-passenger a/c van, and his father-in-law has a 22-passenger a/c van. When they're gathering people at random, they tell you where they're going for the day. But, if you have a group, you can call him ahead of time to reserve one of these vans and tell him what all you want to do for a set price! We paid $20 per person. His cell # is 787-630-2437 and his email address is firstname.lastname@example.org