First time cruising with Celebrity

The Silhouette is beautiful. Our cabin with balcony nice. It could use a little more storage. Room attendants spot on. Dining attendants excellent. Grand dining room food a little above average. We ate lunch and breakfast in their café version buffet. Food was ok. We didn't do any specialty restaurants,too expensive. At $30 and up per person we stuck with dining room. Entertainment  in auditorium at night was average. At start of cruise captain announced we couldn't reach top speed. Little did we know how much that would affect. We were late for every port by at least an hour. We did three excursions. Mayan ruins and beach break on Cozumel. Mayan ruins are interesting but boring after an hour. Guide was knowledgeable. Tour of Cozumel revealed mostly jungle. Beach break was too short and no real changing rooms. There was a small restaurant and bar there. Help was eager to serve. Best of Jamaica excursion, ship recommended was a complete rip off at $110 per person. The excursion lasted 7 hours,3 and a half hours riding in the van back and forth from Dunn's Falls. The falls are nice to see but dangerous to walk in.Hour and a half later after you exit thru flea market and get almost mauled you get taken to town,for more shopping at over priced tee shirt shops. Thirty minutes later to a run down resort for inedible lunch and over priced drinks. After twenty minutes on the beach there and not going in the brown ocean from too much rain we were picked up in a modified catamaran. Twenty minute ride to drop off point,and then one hour ride back to pier. Last excursion in Ft. Lauderdale to Sawgrass Mill  mall was misleading as well. We were supposed to be dropped off in front of Saks to shop for 3 and a half hours. Instead because it was a Sunday and the mall didn't open until 11 we were dropped off at Target. At 1:30 we were picked up and taken to airport. This was our seventh cruise and we expected more from Celebrity. We have never been to Grand Cayman and still haven't been due to the very poor tendering schedule. We were scheduled to arrive at 930am.They had passengers line up for numbers to get tendered.The process didn't start until almost 12. Our number was called at 1:35. We decided not to bother for lack of time and disappointment. So to sum up,ship crew and staff excellent.Everything else needs work.