I thought I would share some observations-
This was my first time on Celebrity, but my 19th cruise overall, most on Royal
I traveled solo but was part of a group of about 150. Ship had 1200 guests (27 under 18) which made it nice. Always able to get a chair by the pool and a table in the buffet. To be honest, if it wasn't for my group the ship would have seemed very quiet and several guests even told us. We are a very social group. *Note - I was chatting with a guest from a Princess ship that said they only had 800 and it holds 4,000. Seems this route isn't very popular. Maybe too many ships sailing it?
I used the Move Up option and was able to get Aqua Class upgrade from my Obstructed Verandah. $200 total ($100pp). For me, it was worth about that. I didn't use the Persian Garden as much as I thought I would, and because I was a solo, I also didn't use Blu as much as I could have. I liked it most for the location of the cabin.
Ship is fine. Yes, there are spots of wear but nothing to take away from the enjoyment. Biggest issue for me was all the paints spots on my verandah railing. I was on deck 11, cabin 1541, which I thought would be nice since it was under the spa area. Seems it was under a storage room or something and cabinets started opening and closing at 6am. Not horrible but still heard and would be a problem for a light sleeper.
Food was good. Coming from Royal, I was expecting more with all the hype about how this is a higher end product but to me they are very similar. The dining room is nicer, and more elegant which makes for a more pleasant experience. I did eat 2 breakfasts in Blu and 2 dinners and the food there was better, and the room more intimate and less chaotic.
I didn't see any shows or do any of the ship excursions so I cannot comment on those. The different musicians on the ship were all very good. For me, the energy was a bit lower than I like. A DJ or more contemporary band at the pool works better for me than the acoustic guitar guy, but it depends on the vibe you're looking for.
Overall, it was enjoyable. Would I do X again? Yes, but it would not be my first choice. I'll stay with Royal