@Sobre **********
this may help.
If questioned by immigration on arrival (rare but does happen) you need to provide 3 proofs for entry into Thailand.
1. 20,000 baht cash or equivalent in a major currency. It needs to be in cash. A bank statement, credit card or phone app showing you have funds wonât suffice.
2. Accommodation booked for at least the first few days. If youâre staying with family or friends then have them write an invitation letter for you to stay at their place.
3. A ticket out of Thailand booked within the number of days your entry allows, regardless that you can get an in country extension. 30 for Exempt, 60 for Tourist Visa (although the likelihood on being asked if you have a actual tourist visa is minimal). Bus train or plane. The two former must be an international ticket out, not just to a border town where you could walk across a border.
These proofs wonât guarantee you entry as thatâs at the discretion of the immigration officer, but theyâre the three things theyâll generally use as a reason to deny entry.