If you’re going to stay with a Thai National, what kind of invitation letter would be sufficient as proof of accommodation? Looking at no 3 here. I realise an Agoda booking would be considered proof of accommodation after quarantine but there is no mention of how long the accommodation needs to be for.
TLDR : Answer Summary
To provide sufficient proof of accommodation when staying with a Thai National, a simple invitation letter from the host is recommended. The letter should state the host's name, address, and the duration for which the visitor will be accommodated. Additionally, it's advisable to attach a copy of the host's ID card, lease agreement, or yellow book to validate their residency.