I was looking at returning to BKK in the next couple of weeks but given the new Foreign Office suggestions, I am now considering hopping on to a flight to Laos or Vietnam as soon as I arrive in BKK, and eventually returning to Thailand when things cool off.
My 2nd flight will likely be a separate airline from the one that will take me from London to BKK. Will I therefore have to pass through immigrations before checking in to my second airline? I know with connecting flights this is not necessary but as the 2nd flight is probably going to be a completely different operation, I'm wondering if immigration checks are unavoidable?
The reason I ask is that I already have a 60 day Thai visa which I'd rather not waste on 60 minutes in an airport. Failing the option of somehow bypassing immigration, would I be within my rights to ask for a new visa stamp in order to be able to use my existing 60 day visa at a later date?
No worries, just ask explain things to the immigration official and ask them not to stamp your 60 day visa right now.
They'll no doubt just give you a free 30 day stamp instead of "activating" your 60 day tourist visa.
I've done this a few times and have never had any problems.