We're interested in going on a dinner cruise.. Which ones best and should we purchase before our trip?? We are also interested in doing some kind of other trip, but no snorkeling. Has anyone been on any of the Isla Mujeres tours?? We're staying at the GCP. This will be our second trip in 3 yrs. Is Xacaret a good trip?? Any input would be great. Last time we went, we didn't even leave the resort. thanks everyone:)