Great input guys. I think I'm going to bring along a black blazer and wear it over my black pants to make it a pantsuit. I'd rather err on the safe side. I'm in my early 30s - I think I'd be among the younger ones on this Celebrity cruise, so I don't want the others thinking "These youngsters don't know how to dress!" :=) So I'll wear the pantsuit, put my hair up, put on some dangly earrings, strappy shoes, and I'm ready to rock and roll!
Can't wait to set sail next week. This is soooooooo exciting.