We are experienced cruisers and our favourite cruise line is Celebrity. This was our first time on the Reflection - however we have been on other Solstice class ships (Equinox & Eclipse). Reflection is now our favourite Celebrity ship. As for embarkation in Miami - it has never been so quick, maximum 15 minutes and enjoyed walking around the ship and Café al Bacio prior to opening of cabins. We had booked reservations for Select Dinning and were easily able to add an additional couple to our table. Sail away was an hour earlier than usual so muster was also early.
We have noticed a few of the "five and ten" differences noted in other Celebrity reviews but they are minor. One as mentioned in other posts is the large increase in price for Bistro on 5. Also, a few wines that used to be on the classic alcohol package are now priced just beyond package limit ($10 or $11). Also, $10 for Bistro on 5 has dramatically reduced the number of people eating in Bistro on 5. We have always enjoyed the food in MDR and did not notice any difference in the quality of food. Oceanview is crowded in the morning but a plan of sitting in the same area each morning can help - especially if your a group of 6. Breakfast in MDR a couple of mornings can offer a nice change. We appreciate that MDR serves a "normal" portion of food, meaning not to large or wasteful. We always enjoy a trip to Tuscan - unfortunately it wasn't as good as usual but the maitre'd fixed that easily.
As for entertainment, they were running the shows of previous years but that will change in April and looking forward to Celebrity owning the entertainment. As we took a B2B - Celebrity facilitates the mandatory immigration process easily - it is a very quiet private day in which we spent a few hours in Solarium with only 6 other passengers. If you are B2B, pack a bag that you can carry around the ship that includes a book/ipad/tablets and bathing suit as access to your cabin is limited.
Cabin was as we expected as we've been on several solstice class ships. I find the cupboards above the bed to high as I'm short. To make best use of space, I bring items from dollar stores such as 2 small no-lid containers to hold loose items in the bed-side tables, pop up laundry hamper and place it inside the closer and a jewelry "hanger" . I also take wire hangers (from dry cleaners) and I leave all this behind on the ship. If you aren't concierge level - remember cotton swabs. If we had any questions we asked stateroom attendant and everything was addressed with a smile on their face.
Mamboo Beach Club - nice and relaxing while still providing good service including tapas and beverages delivered to us in beach chairs frequently. tour staff were very friendly. Cost for this was $1 cheaper with Celebrity than if booked privately and included pick-up and drop off at the pier
rented van at the pier that included driver/tour guide. Van was private for just 5 of us and included stop for lunch. negotiated a fare rate and Moses the driver/tour guide was great. In total lasted 2 hours