We are first time cruisers on our honeymoon and picked Celebrity Cruise based on feedback from friends who have sailed with Celebrity. We really didn't know what to expect; the only thing we were sure of was that we weren't going to starve to death.
Embarkation: Herded like cattle, but it didn't take long. Make sure that you have your passport or ID ready!
On ship: We didn't realize that Celebrity upgraded us (twice...BONUS!) I had booked the cheapest inside room, we then headed for a room with a window on the 8th and we ended up with a balcony room on the 6th floor. We ended up getting our luggage as we suspected that it was sent to the original room I booked (this was annoying as we tried telling the staff that our bags were tagged with the original tags given to us.)