We cruised on the 12/15 sailing of the Reflection. This is our fourth cruise with Celebrity, and probably the weakest. While the ship is new and nicely appointed, the "wow" features, like the hot glass studio on Solstice, are missing. An extra deck has been added, along with more passengers using the same number of elevators as the other Solstice class ships. This was a minor inconvenience to ambulatory passengers like us, but there were many scooter/wheelchair passengers who endured long waits. The lawn was mostly roped off on our sailing - I suppose for the use of those renting the "Alcoves".
We had the feeling that this ship is Celebrity's attempt to return to "Class" cruising, with special suites and more pay-to-dine restaurants. We felt somewhat uncomfortable with the amount of selling of "extras" on this cruise.
Overall, our cabin was very comfortable, the food in the Opus dining room and other venues was superb, the service level we experienced excellent. We had a wonderful waiter and bus boy for our late seating, and the cabin attendants were perfect. This did not seem to be the case around the ship, as I over-heard many passengers complaining about both. It's possible that, as a relatively newly launched ship, more training is in order for some staff.