Some suggestions: Try space bags. Believe it or not they keep your stuff neat and give lots more room in your luggage. Hang formal attire in a garment bag. If your clothes still get wrinkled then try the steam cleaning method. I do this in hotels and cruise ships when I am desperate. Hang your clothing on a hanger in the bathroom as close to the shower as you can without getting it wet. Turn on the water as hot as it will go in the shower. Leave the room and close the door. Wait for about 10 minutes and then go get your clothes. They will be wrinkle free! If push comes to shove then call housekeeping and have the ships laundry press your clothes and you'll have to shell out a few bucks...but at least your clothes will be taken care of.