We sailed on Summit last August and will be on Equinox in 3 wks. Before that we were Carnival cruisers for years. On Summit, I was constantly comparing things to my Carnival experiences. More things were similar than different. The food I found very similar, missed Carnivals chocolate melting cake, the best! The service I found good on both, bar service better on Carnival. So many have drink plans on Celebrity that waiters can be scarce. Entertainment/ activities were better for us on Celebrity just because we are older now and it seemed a little calmer. Prices...I booked both cruises on Celebrity because they were cheaper than what I could book on Carnival at the time and the itineraries were good. We are near retirement age, upper middle class income and for us cruising has always been what you make of it. Relax, you’ll have a great time!