I didn't go on this ship but I did cruise with RC on anther ship (I forgt which one maybe Majesty of the Sea). I was 21 and I felt like it was friendly laid back atmosphere. I really don't see them caring if either of you wanted to go to under 18 events or over 18 events or both. I had seen your other post about dinning dress. I was a more casual person when I went on this cruise but very happy that I took sun dresses. After playing all day and getting sun, it was great to just throw on a sun dress and have dinner and then walk the deck with the wind blowing. They are great if you get sun burned and for throwing over bathing suits- they don't need to be dressy but the older people on board will not complain like they would if you are in jeans or shorts.