Originally Posted by
jpatokal
If things got bad enough to block the border at Poipet, I'm fairly sure they would close the other borders and halt flights as well. But, as you said, this is highly unlikely.
I wouldn't necessarily make that assumption.
At any rate, a traveller could backtrack and cross to Laos and then overland to Thailand from there. Or to Vietnam and fly. Or fly to a third country from REP if all flights to Thailand are toast. Point is, with Cambodia, there are plenty of Plan B, C, and D options.