But it will probably still take a good chunk of the day to go to Tulum, on your own, or not. Getting to the ferry, ferrying over, finding a taxi, ride to Tulum, walk around, find another taxi back, etc,etc. The one thing good about taking the tour is that the fare is set in stone. If you go yourselves, you may need to dicker for taxi fares and could really get ripped off. Especially going that distance. You also have to realize that you will be going to the mainland and that the chances of you not getting back in time to the ship increase. We were on a cruise that had an excursion to Chiczen Itza (sp?) and the water got so rough, the Ferrys stopped running for a couple of hours. Our ship waited in port for over 6 hours for the tour to return. If you run into that problem while not on a ships excursion, you'll be flying to Orlando! With that being said, we have booked private excursions for this up coming cruise, but are sure that we have plenty of time to get back to the ship, even if we have to walk!
Maureen