This was a 7 night milestone birthday cruise we planned in July 2016 for April 2017. We had already been to 2 of the 5 islands, but were anxious to see the other 3 islands. The whole thing kind of slowly fell apart beginning in March 2017 when we were advised the cruise had been shortened to 4 nights (ship was in dry dock for Rolls Royce engine propulsion problems, common with this ship class we have learned) and we would only see one new island (Antigua). We would have been wise to cancel right then and there, but decided to go ahead because our friends still wanted to go. We spent 4 nights in San Juan, Puerto Rico to see the sights before the cruise. We were glad to have seen San Juan, but we have no need or desire to ever go back. Many parts of San Juan are not very safe and once you've seen the Bacardi factory and the rain forest, you're kind of out of things to do. Shopping in San Juan wasn't a great experience for us either. Since Celebrity had upgraded us from Aqua class to Sky 2 class (and to their credit offered us credits for the shortened 3 nights), we were excited to see our room when we boarded. The boarding experience was fairly good (not as quick as other Celebrity cruises) and our room was nice. The Summit in general is dated and all of it could use a remodel, but it is clean and well maintained, as was our room. We enjoyed drinks in Michael's and dining in Luminae that came with our suite. We tried Blu as well and determined the Blu & Luminae menus and experience were very similar and we would book Aqua class for future cruises, but the suites aren't worth the higher dollars. The gym was nice and fairly large, but not many group classes were offered. I saw two yoga classes and I took the only pilates class offered and it was marginal. After a good night's sleep the first night heading to Antigua, we were awakened at 5:45 am with the Captain telling us another ship had a man overboard and we were heading there to help look for him. Probably the right thing to do, but the result of that redirection was a very short day in St. Croix instead of Antigua. There is absolutely nothing worth seeing or doing in St. Croix and no credit was offered by Celebrity. We walked around a few blocks and went back to the ship. Our visit to St. Martin was the best experience we had. We took the America's Cup 12 Meter Sailing excursion and we would highly recommend it. Our visit to St. Thomas was fun and we always enjoy the shopping there (particularly the jewelry at Little Switzerland and Tiffany) and an Italian lunch at Virgilio's. All in all, this cruise was not a good event for us. We have two future cruises booked with Celebrity and hope they go lots better.