After 33 cruises I can think of a lot of suggestions, but the first one that comes to mind is the selection of drinks available at the buffets. Without purchasing a drink, your options on most ships (not all of them) are water, coffee or ice tea. My DH and I, we're not ice tea drinkers, and we don't like coffee at noon, so we drink water. We've been on some ships that have lemonade and that is really great. I would like to see that added to all of the ships. Everyone doesn't like ice tea.
Just a little suggestions.....the bigger ones are coming later.
Anita aka Buddy