I don't have any experience, but I'm sure you will find work. Thailand does not pay well enough for people to save money, and some teachers complain they just get by. In some areas of the countries, even private schools do not have air-conditioned classrooms. It's not unusual to be saddled with extra duties or to be expected to be at the school 40 hours per week even when you have no classes. It's fine if you really want to be in Thailand, not good if you are out to make a lot of money or pay off existing debts. For that Korea is supposed to be the best choice.