For Chacchoben, we took a ships tour (sorry, I should have mentioned that!). It is a bit of a drive to get to the site, maybe 45-60 minutes. They provide nice charter busses. However, considering its distance from the pier, if you were to have a transportation problem... that could be a mess. Thats why I would only recommend the ships tour for that particular excursion. Back when we went (2002), I dont think there was another option. Maybe now there are independent tours that are reliable, I just dont know. If you take a ships tour, the ship will not leave without you. When we were there, our departure was delayed by over an hour. We had a balcony on the port side (facing land on this occasion) and were sitting out on it enjoying the sunset and wondering why we hadn't left yet. Then 6 tour busses came through the plaza, drove all the way up the pier right to the ship. They were full of people from the ruins tours (not sure which tour, there are a few sites they offer from this port). Had they been off on their own, we would have sailed away without them. Any time you take a tour that is independent of the cruise line, you run this risk. And yes, they will leave you behind, Ive read about it happening. As for the other ports, I think independent tours would be fine. You just have to be careful what you choose, and be very mindful of your time. Make sure you know what the ships time is and if there is a time difference in port (often the case). I should also say that the tours Im talking about were done on Princess, I have never sailed with Carnival, but assume that they would have the same basic policies. If you arent sure which specific tour to pick, just ask for opinions here on the board, and others will give you some input.
Edited to change the word "boat" to ship... heaven forbid I call it a boat! :lol
Post Edited (04-30-04 11:15)