usually on a carnival seven night its like two formals...one is a little more formal than the other...and for a girl the formal outfit can be like a homecoming dress...i usually wear past years homecoming dresses on cruises to get another chance to wear them...some girls go all out with prom dresses but i usually just wear my homecoming ones...the other nights are just nice outfits...theres a "no shorts" rule in the dining room but bermuda shorts are ok with a nice shirt ; but i usually just wear casual shorter skirts on the other nights with nice shirts...with halter/tank/tube tops...they aren't really too strict you just can't roll out of bed or anything