SIZE does matter, this ship is big. Dream designed for 3600 passengers had 4700 as most cabins come with extra beds and it was family cruise time. How did it affect us, elevators were a constant wait, each venture out of cabin required elevator travel. Not just a wait for slow elevator but having to ride wrong direction because too many of the opening doors revealed they were full, computer on elevator obliged to stop for our call but didn't have sense to know it was full. Only thing worse than a slow elevator is no elevator when power went off, 14 decks of stairs was possible for those not in wheel chairs as every landing we passed had one waiting. Dream had a power failure and 30 minutes later someone assures the people stuck in elevators that they were working on the problem, it did come back on in less than a hour, but must have seemed longer since no a/c. Deck levels needed: 3 for dining restaurant, 10 for cafeteria, 5 for sushi bar 4 for library,5 for casino, clubs,11 for spa 15 for Serenity, adult only deck but that needed a transfer as only elevator to it was within the spa on 11.
Not being young and fit, walking the 1,000 ft corridor forward to aft was a chore. The two formal restaurants with waiters were on deck 3,4 but one was central while the other was aft, the after dinner entertainment theatre was all the way forward. the lounges with late night comedy shows were aft. 1000+1000+1000+1000 and back to the room 1,000 or about a mile on moving decks either with carpet or tile. We noticed lost people every day, even on debarking a lady asked, "are we walking right way to forward area". Only place to know where you are is a floor and deck plan located by elevator banks for each deck, very easy to get confused without fore and aft or port and starboard indicators. Carnival cutting back on paper decided not to have deck layout plans readily available they did give small deck level drawing, but customer relations desk had to hunt up a floor plan for the missing info. We enjoyed the ship most while in port, even tried to watch a movie on giant screen, worked until returning passengers filled the tiny pool and noise competed with sound system. Lots of hot tubs on board but they didn't need to heat them here in the tropics. Reason for time of cruise was to celebrate G-son's graduation, from now on we will go back to cruises while schools are still in session.
We couldn't hear general announcements due to good sound proofing of door, but I know the in room speaker worked as we did hear a couple of messages looking for individuals. Had to prop door open with dead bolt to be able to hear debarkation announcements.