Maybe. It's usually dependent on demand. IF (big if) enough request, they'll arrange a B2B tour to Windsor from Southampton. It's probably the same from Civitavecchia.
By our experience that would be none. Notify CelebrityEngagementCenter@celebrity.com before the cruise, then follow-up when you board---it should be noted on your record. Also, by our experience, they are happy to accommodate your request---but choices become repetitive.
I'm sure they will resolve this to your favor soon. Next time, when you first meet your cabin steward, ask them to empty the fridge---you will not be using any of its contents.
Not at all. WiFi and internet are 2 different things. Celebrity app (for on-ship messaging) uses wifi---free. If one needs to message/surf/browse offboard (is that a word?), internet is required---$$$.