I'm taking my 11-year-old son to RDC in January. I've already booked the day tour on the Marigalante. If we go on the whale watching/dolphin tour to Marietas, will we be basically doing the same things as on the island stop for the Marigalante? We swam with the dolphins in Puerto Aventuras, so I don't want to repeat that. At this point, it's a toss-up between a horseback tour or a zip-line tour, I think. Thoughts? Advice? Thank you!