bed supper club in bkk (totally overrated, imho, but that's another thread) makes some men put on socks with their sandals...but not all. hubby was wearing cole hahn slides and the doorman had us go to 7-11 and buy socks. that's fine, but later in the evening i saw a guy walk through the door with his date wearing flip flops and jeans. whatever.

to the op's question about attire, i prefer to dress like an ex-pat rather than a tourist. for thailand, that meant i wore shirts with sleeves (no sleeveless) and no shorts or short skirts. sandals for both of us. hubby wore chinos or jeans and a collared, short-sleeved shirt. we didn't wear t-shirts proclaiming 'beer--it's what's for breakfast' as we didn't see any thai guys wearing them