it's acceptable to go barefoot in Thailand?

They will try to ask what happen/where is your shoes (in thai) :D

Did you mean running barefoot at park? that's totally fine. but if you mean walking around in city it probably a little weird
and some shopping mall, restaurant may not ok with that.

lol, ok thanks

its only normal to monks to be barefoot it appears, they walk barefoot in the cities (buddhist monks)