I don't see many women jumping in with advice, so allow me...If any of your body parts are NOT Asian-sized (and by that I mean teeny tiny), then you should bring large quantities of bras, cotton underwear (impossible to find here unless you like granny panties), and SHOES. Shoe shops here do not sell women's shoes above a size 8 U.S.! Thank God for Lazada, One can order Birkenstock sandals from China, but the odds are about
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on whether they're authentic or knock-offs. Besides all that, make sure you have your visa situation locked down, as well as housing that allows pets, because that's difficult to find here. Keep your cats indoors because they won't have immunities to the viruses here, along with all the other dangers like soi dogs, snakes, and motorbikes/cars. Hua Hin is a good "starter city." I think you'll love it!