We recently went to the Club while on the Mariner when we stopped. We were the only ship in port and I had a pretty good deal on it (all things considered) at $79. We LOVED the experience. This particular cruise it was just the two of us and we figured we should try it at least once. To give a bit of perspective, we are a middle aged couple, NOT high maintenance and just love to cruise and chill out. We arrived early (much to my husbands dismay initially!), but scored one of the beach beds (first come first serve) right by the pool. The service there was no less than fantastic and it was nice to be able to get in and out of the pool without getting sandy. Restrooms are very close by as well. Lunch - WHEW - The lunch was no short of spectacular. Seriously, I consider myself a bit of a snob with lobster and steak and these were cooked perfectly. Sitting in the shade with a breeze, view of the ocean, outstanding service, and enjoying a fine meal - What more could you ask for? Afterwards, back to chilling out in the pool and the lounger. Finally, a trip back to the boat. It truly was a perfect day! Also, no exaggeration, there were probably less than 50 people there (including cabanas).
Above review aside, I'll say, we're big fans of Coco Cay in general and have never spent any $$ on excursions there in the past. The pool, the beach, swim up bars, seating, food, drinks etc are great all around the island. Zero complaints whatsoever. As someone else said, if there's definitely no "need" to do the Club. It's fun, and if the price is right, I'd definitely do it again, but definitely not a MUST DO. This particular cruise it was just the two of us and we figured we should try it at least once.