For your casual evenings, especially during the land part, consider putting on "tomorrow's clothes" after showering. Also, consider bringing just one pair of decent (not too dressy) pants, and pairing them up with a glitzy top for formal night, a nicer blouse/top for informal, and something casual for casual nights. If you do this, you only need one pair of shoes for the evening, preferably a pair of sandals that can go "both ways," I have a pair that I can also wear to the pool as well as to dinner. This way I only travel with two pairs of shoes, sandals and sneakers. I have traveled several times for almost three weeks to Europe, South America, etc. (on cruises usuallyand we add a couple of land days on either end to help with the transition), and take one roll aboard suitcase that is not at all over-packed, and look sharp and appropriately dressed at all times. Use one base color (black in my case, could be navy blue, or brown, etc) and make sure that everything you bring can go with it, maximize what you bring by mixing and matching. I try to always keep that in mind when I go shopping, and no, I don't have any clothes that I purchased specifically for travel. If I can't wear an item with many/most/all other seperates that I have brought, I don't usually bring it. I always try to bring at least one gown too, b/c I hate to wear the same thing to dinner more then once. The only laundry I do on these trips is panties and socks, and an occassional lightweight top or two if I must.
Good luck packing!
