Thai culture is relatively tolerant of both male and female homosexuality. There is a fairly prominent LGBT scene in Bangkok, Pattaya and Phuket.
With regard to dress or mannerism, the LGBT community are generally accepted without comment. However, public displays of affection – whether heterosexual or homosexual – are frowned upon.
It’s worth noting that, perhaps because Thailand is still a relatively conservative place, lesbians generally adhere to rather strict gender roles. Overtly ‘butch’ lesbians, called tom (from ‘tomboy’), typically have short hair, and wear men’s clothing. Femme lesbians refer to themselves as dêe (from ‘lady’). Visiting lesbians who don’t fit into one of these categories may find themselves met with confusion.
Utopia (www.utopia-asia.com) posts lots of Thailand information for LGBT travellers and publishes a gay guidebook to the kingdom.