Just finsihed a 7 day Carnival Cruise with my family and came across an excursion which was truly great. We were tired of the same old snorkeling, beach, jeep tours, and wanted to try something else. The Amazing Cozumel Race is listed as an adventure tour but it really wasn't that grueling. It was similar to the TV show the Amazing Race (but we didn't have to eat any bugs). We raced against 9 other teams throughout Cozumel and had to solve puzzles and find hidden clues throughout the city. My son even had to dive in the water and find clues on a sunken ship.
The guides were great and the whole race lasted about 1:45 minutes. We didn't win (because my wife was too slow) but we did have a great time and I hope they change up the race next time so we can try again. If I had to say anything negative about it, it would just be that we found it to be pretty easy. My family loves games and puzzles so we are always up for a challenge. The puzzles themselves were pretty easy.
Still, a great adventure and a great time!