Some Thai companies prefer having meetings out of the office which allows them to understand the individual better. These meetings might take place over lunch or dinner at a hotel or restaurant or at a home of a senior executive of the group. When you enter the house or location observe if the others remove their shoes and follow through. Many females might not be attending the meetings but if you are introduced to any female businesswomen or family members, wait for their action to see if they extend their hand for a handshake, and if so you may do so but if not you can do a slight bow and acknowledge the introduction. Do not make the mistake of trying to talk business instantly after passing pleasantries, Thai businessmen prefer to get to know their partners before starting to talk about business.