I would say try Princess! In the Caribbean all ages sail on Princess, generally their longer cruises draw the older crowd.
I've sailed on the Glory and it was a fun cruise, food was fine but the layout of the ship rather disappointed me. There aren't that many windows in public areas and overall the ship seemed "dark" to me. I just prefer more windows and lighter interiors. This is just my personal take on it, I'm sure others disagree.
There were times when the promenade/public areas were so congested it was just too crowded, not enough room for people to spread out. This created a smoke issue and I don't want to start a war on that either.
I enjoyed my cruise but would not sail on a Carnival ship with that particular layout again.