Excellent advice! A loose cotton skirt and short sleeved t-shirt is also the most comfortable outfit in the heat. I noticed most of the Thai women wear cropped pants (mid-calf) and they are amazingly much cooler than full length slacks.

Hotels, McDonald's and nice restaurants are your best bet for western toilets. Just walk in and use the facilities and pop back out again. Sometimes you have to ask, but frequently you can locate the restroom and be in and out without making eye contact with anyone.

Don't let this advice put you off. You will have a great time!