What documents do I need to fly from Bangkok to Krabi this weekend considering our vaccination status?

Traveling from Bangkok to Krabi via flight seems straightforward if you have already quarantined. It appears that proof of vaccination may be necessary, but some travelers have reported only needing their passport and Thailand Pass. One individual mentioned they faced no additional document checks when flying from Phuket. It's advisable to check with your airline and possibly join expat forums for the most current information. Additionally, there might be concerns about expired codes related to vaccination proof; it's unclear if only current dates are required.