We did the Tulum Ruins and Beach Break.....instead of shopping, we went to a beach for lunch after the ruins.  I'm guessing yours is similar other than not going to the beach. Here's how our excursion went on the Mariner (according to the Cruise Planner, Mariner excursions are an hour shorter than other ships due to ship departure times): We met in the main theater as per directions on our tickets.  There, different excursions received different color stickers (to put on your shirt) ba