Approx how long does it take to obtain a re-entry stamp at Suvannabhumi ? Need to budget airport time. Tried at the Jomethein immig office, and after 2 hr of queue time, was told I need a print out of an outbound flight (which doesn't make sense ), tm30, 90 notification copies.. etc. Rather not return to Jomethien immg. I already have the TM8 filled and can perhaps reuse at the airport.
TLDR : Answer Summary
Obtaining a re-entry stamp at Suvarnabhumi Airport generally takes a short amount of time, typically between 10 to 20 minutes, according to several recent experiences shared by travelers. The cost for a single re-entry stamp is around 1200 baht, while a multi-entry is 3800 to 4000 baht. It is advisable to have your passport and the TM8 form ready, although other documents may not be strictly required.