My husband and I (along with my parents) were just on the Summit going from Barcelona to San Juan. My husband and I were probably one of the younger couples on board being 29 and 35. My parents are in their 50's.
We did not book a hotel through Celebrity in Barcelona as we booked it on our own because it was way cheaper. Embarkation was a breeze both my husband and I, and my parents were in CC class, no line and we were on the boat in probably 1/2 hour, we also stopped to change some money which took more time than anything else!
The ship was great! We have only been on Celebrity one other time and that was on the Galaxy on a transatlantic 3 years ago. This time (and last time) we had a balcony in CC class. I loved the room, thought the bed was comfy, everything was very clean and nice. I loved both of these ships the Summit however has a great indoor Thalassotherapy pool which was wonderful, and warm, which the Galaxy didn't have. Though I liked the buffet set up better in the Galaxy, either way both were/are great ships. Even more fun this time of year the Summit was decorated for Christmas!
Loved the cabin we were in CC class and loved having a balcony. I couldn't think of anything to complain about in the room, plus the service was great!