Welcome to Cruise Chat! I too am a senior citizen, and we never feel out of place. Everyone on the ship is on vacation, and having, usually, a great vacation. One of the nicer perks of a larger (larger than Junior) suites is the concerige lounge which is available for vening drinks and snacks before dinner, and a light breakfast. I have NEVER dressed up for formal nights; many do not, wearing a sport coat or suit and tie is more than ok. Even in the speciality dining areas such as Chops or Portifinos this is ok. Havent't been on this size ship before myself; but if she holds true to Royal Caribbean form, she'll be very nice. Have a great cruise!! You will, I believe, like Royal Caribbean.