Baggies okay for the rest of the cruise, but I agree you should put your foot down about that look in the dining room at night. Either that, or let them know they will have to eat at the Lido buffet if they won't put on the "nice" clothes.
My son accepted the dress code much easier than I thought. Especially when he saw virtually ALL the other teens dressed appropriately.
Carnival Elation March 11
Carnival Imagination Sept 07
Carniival Sensation Dec 06
RCI Sovereign of the Seas Sept 06
Carnival Miracle Sept 05
Carnival Glory Sept 04
Carnival Fantasy Jan 04