We are in our 70's. We sail both Celebrity and RC. We don't cruise on RCs mega size ships. Freedom Class is the largest class we cruised on. We prefer the Voyager and Radiance class the best. Celebrity's fleet of ships would be in the Radiance and Voyager class. Less kids on Celebrity. Food and entertainment I feel is subject. We like the differences and similarities between the two. You will be elite on Celebrity. Celebrity doesn't have a dedicated lounge like RC does (DL). The Captains Club stopped doing the CC HH in the Sky Lounge when they started back up. Bummer! RC excels in that category. Elite, elite plus and Zenith get unlimited drinks from 5:PM to 7:PM at most bars every evening except the first evening (embarkation). Nothing for that night. No CC HH drinks in any of the dining venues or theater except in the morning from 8:AM to 10:AM in the Tuscan Grille where they serve bloody mary's, mimosa's and bellies and a continental style breakfast.