the only place were I came across girls doing Thai boxing so far is in Lamai on Koh Samui. There is a lady boxing on a non regular base in the boxing ring in the middle of the beer bars in central Lamai. I once saw it, wasn`t particular impressed but a lot of the poeple around seemed to like it as it was damned packed!
some months ago, maybe still now because I did not have the stamina to stay up that late for a fight i saw boxing near the Hillary bar about 200 m from the Plaza into Soi Nana. they had young boys and once I saw a farang. Now get your wife to join you or get Mistress Kaew to beat you in the ring. how's that for a unique holiday!