Regarding the visa to Thailand, I will go to Thailand again in the short term.

Thailand tourist visa is valid for 90 days (this 90 days means that you have to use the visa to leave the country within 90 days, and the overdue period will be counted as expenses). Generally, entering Thailand will give you a legal residence time limit of 60 days. When the 60 days are approaching, it can be renewed for 30 days at a cost of 1900 baht, and can be renewed for another 7 days after 30 days. After seven days, you must leave the country. Extension is not usually recommended.

Take you as an example. If your company organizes a tour and wants to go back, it needs 1000 baht to apply for a return visa at the Thai airport. The return visa is valid for 60 days upon entry. As far as I know, Suvarnabhumi Airport can handle it. Other airports are not clear. You can also take a taxi to the immigration office.