DonG - you're right on too.......can't understand how people can pack so much - seems to me they must spend all their time changing outfits.
Even on a 14+ day cruise I seldom have more than 2 pairs of shorts, a cotton skirt and 1 pair of casual slacks, mix and match tops for sea and shore days. I've never felt out of place or improperly dressed....and NEVER has anyone commented 'you wore that yesterday'.
Informal and Formal nights as equally easy - mix and match. Goes for guys too but skip the skirt - add pants!
We never ever have more that one bag each.