Anthony Verloop, 61, and Kannikar Kankhai, 42, were arrested at the Rammakian Resort on Soi Thapphraya in Bang Lamung district of Chon Buri at 1 am.
Police found about ten couples, mostly foreigners, in nearly naked and several sex toys and used condoms. The couples were not arrested.
Verloop and Kannikar admitted that they opened a web site to invite couples to join parties at their resort to exchange sex partners. Each member will be charged Bt2,300 a yer.
Police charged the two for allegedly soliciting others into sex services.