Writing from a Diamond plus member, who mostly sail with Celebrity Cruises.
I am not going into details regarding frustration I experienced, booking all dining and activities. Yes, my reservations got cancelled and I have to do it again. RC discontinue bus service from MA, but neglected to remove the info from the website, so after final payment we found out that have to arrange our own transport, which turned out to be a hassle.
I am glad I have sailed on Anthem- very nice ship, even it doesn't feel it is a ship, feels like a hotel with a shopping mall in the middle. Embarkation and disembarkation were very smooth and quick.
Very nice cabin, with plenty of storage space, bed is by the bathroom. 50% obstruction- lifeboat in front of the cabin.