UPDATE 3/15: I wasn't asked for any of the "3 proofs"
when doing a border run nong-khai to laoswith an immediate return, do you need 3 proofs (20K thb, outbound flight, hotel reservation) or is this not asked for re-entering thailand? thank you.
TLDR : Answer Summary
The recent experiences of travelers crossing from Nong Khai to Laos indicate that it is generally not necessary to present the '3 proofs' (20,000 THB in cash, outbound flight, and hotel reservation) when returning to Thailand. Many users in the discussion share that they were not asked for these documents during their border runs. However, it is acknowledged that requirements may vary based on individual circumstances, such as travel history or if the immigration officer has suspicions about visa misuse. Thus, while the crossing is smooth for many, some advise carrying the necessary proofs just in case.