Frankly...I was dissapointed with Celebrity. Overall, when comparing with my last Carnaval Cruise Ship, I rate the Silhouette much lower. Main dissapointment was food, followed by lack of storage in stateroom, quality of mattress, size of hot-tubs (very small), lack of outdoor activities (don't need a Zip-Line, but a Mini-Putt would have been very nice), price of wine & beverages (costly compared to Carnaval), quality of entertainment at evening shows, etc...
As for the Tour company (Shore Excursions), that was a huge dissapointment as well. We had booked two excursions; the first one on St-Thomas was Kayak & Snorkel. The snorkeling was terrible : absolutely nothing to see except for 3 or 4 snappers. A huge waste of time. Our second excursion (in St-Maarteen) that we were really looking forward to (snorkeling with the turtles on Pinel Island) was cancelled due to ocean swells. Mother Nature's fault, I know, but an alternative should have been offered, other than dumping us at Friar's Bay Beach for the day.