it is according to the suppression of prostitution act 1996, it does not depend where it takes place
Section 5. Any person who, for the purpose of prostitution, solicits, induces, introduces herself or himself to, follows or importunes a person in a street, public place or any other place, which is committed openly and shamelessly or causes nuisance to the public, shall be liable to a fine not exceeding one thousand Baht.
Section 6. Any person who associates with another person in a prostitution establishment for the purpose of prostitution of oneself or another person shall be liable to imprisonment for a term not exceeding one month or to a fine not exceeding one thousand Baht or to both.
Section 11. Any person who is the owner, supervisor or manager of a prostitution business or a prostitution establishment, or the controller of prostitutes in a prostitution establishment shall be liable to imprisonment for a term of three to fifteen years and to a fine of sixty thousand to three hundred thousand Baht.