It's hard to decide what to wear during the hot, humid summer Monsoon season when also in and out of air conditioning throughout Thailand and Cambodia. What worked best is Linen, Cotton then Silk in that order. Longer shorts and skirts worked well as they provided covering on the legs on wet sticky bus, boat, van seats, as well as, proper covering when visiting Wats and traveling by plane. Having some liquid clothes detergent on hand to rinse and hang clothes overnight in hotel Air Con worked well with a day or two drying time. Sandals not flip flops work best to stay on and dry faster than sneakers. A pair of Patagonia "breeze" flats were great in all weather for all occasions. I bet Sperry boat shoes would work. Many folks were sportin' TOM's or espadrilles. I didn't pull out my rain jacket often, instead I bought a 50 cent plastic poncho that also covered my backpack and purse. A hat was more effective than suntan lotion. Having a pocketbook with body strap was great to free up hands when toting luggage and jumping on and off tuk tuks. zip lok bags to keep phones, laptops, paperwork and medicine dry are a must! A caribener to attach money purse to bra strap added a safe place for passport and bills. Certainly carrying less clothes and luggage is easier. Rinsing out quick dry tops, shorts, bathing suits and undergarments in the evening and discarding items as you go along is easier than overpacking and lugging from place to place.