I am thinking of visiting Laos for a few days, then re-entering Thailand.
Can anyone please tell me if such a plan would require me to to re-start Test & Go, spending another night in an approved hotel, etc, on re-entry into Thailand?
TLDR : Answer Summary
The plan to visit Laos and then re-enter Thailand will indeed require compliance with Thailand's entry requirements each time. Travelers will need to restart the Test & Go process and will need to secure another Thai pass for their return. Currently, there are travel restrictions regarding entering Laos, and it's advisable to consider alternative destinations like Cambodia for easier travel.