This is what I do also, except I spray them down, then hang them in the bathroom and take a hot bath or shower. The heat and humidity from the hot bath helps the wrinkles to fall out. I also carry a travel size spray bottle of Downey wrinkle releaser just in case.
Same here. I don't do laundry on vacation!

I pack enough clothes for my entire trip, plus one extra outfit. I used to use the zip lock bags, but several years ago a fellow DISer here on the boards turned me onto packing folders and packing cubes. I love them. Using the packing guide that comes with them I can get a full week's worth of tshirts, shorts, and capris into one 18" packing folder which then easily fits into one side of my carry on and I'm pooh sized.

As long as the velcro will catch, those things will stay closed, so you can really stuff them. I then pack nine days worth of panties and a nightgown in a slim packing cube and a week's worth of bras in another slim packing cube. If I need socks for the trip I'll pack nine pairs into a third slim cube. I use a Vera Bradley toiletry bag for travel size toiletries, a Vera Bradley trip kit for several cans of sunscreen, a Vera Bradly Kiss and Make up bag for makeup brushes and tiny travel size makeup items, a VB tech case for phone and battery chargers, another VB tech case for my camera, a VB coin purse for my MP3 player and charger, and a small packing cube for miscellaneous items that I don't want loose in my bag. I then fold any extra clothes I might want to carry into a 20" packing folder that I drop into the bottom of my checked bag. I keep a dryer sheet in both packing folders and in each suitcase to keep everything smelling fresh. Every night when I get back from the parks I repack my clothes (including underclothes), back into the 20" folder using the packing guide to do so. That way at the end of the week everything is already repacked (and squished nice and flat) and all I have to do is drop the empty 18" packing folder and the empty slim cubes into the bottom of my checked bag, with the 20" packing folder which is full of dirty clothes on top. My carry on will now have room to bring back any souvineers and when I get home all I have to do is drop the 20" packing folder full of dirty clothes into the laundry basket, wash off the packing folders and replace the laundry sheet with a new one, to wait until my next trip. I also replace the stuff in the toiletry bag and rehang it in the closet to be ready for the next trip. It makes packing and unpacking a breeze. I like that using the 18" packing folder I can easily carry a week's worth of outfits, plus my underclothes, camera, MP3 player, and cell phone in my carry on. My checked bag will have very little in it going down there, but will be full (but still underweight) coming home, leaving my carry on almost empty for souvineers.