I am all about the Dream class because of the Cloud 9 Spa with that big T-Pool. If a ship does not have that setup, I am not sailing. Passed up a pretty good deal on a 7-day on the Vista for a 5-day on the Breeze for this reason!
If you are on the port side of the ship on Deck 12 of the Breeze or Magic, easy to get early access. Just go into the fitness center "to look around". Open the mirrored door by the free weights and there you go....