Yes I've been onboard a few times and will be going up the plank as you come off on the 13 April.
There are hot tubs they are on the very top deck aft. A great spot to be at sail away. Too bad X doesn't have the tubs open later.
The ship layout is pretty good except for the first lines inside the main doors of the buffet. It's pretty crowded when the ship is full. I think and my memory may be a little foggy here that when they refurbished it a while back that they added another line entrance at the other end of the area further aft.
The tricky get around is the mid ship elevator. This will take you a couple of days to figure out unless you get "My Tip" Maybe if you really look at the deck plans you can see the fault
Also the rear entrance to the Main restaurant is closed most of the time blocking flow on that floor from the rear elevator.
Also there are a few rooms that have fixed beds so if you want beds together this can not be done. You have to check the plans carefully if this is a concern.
It's a very nice ship and a great crew or was when we were last onboard and I have heard that is still true. The first "Martini Bar" at sea...looking forward to returning,
We are hoping that since ours will be the very last cruise as a Celebrity ship they don't shut it down too early. Fingers crossed.