yeah, this never made much sense to me either and I will admit that I took advantage of it a few times. Getting in Hoi An you wouldn't even know there was a pandemic at the beach areas... everything was open and people were just doing whatever they want. I'm guessing the mandates vary on some sort of provincial line. I had heard about people going north and the same phenomenon was also true.

Something else that was really stupid (IMO) was that taxis were only allowed to have half the usual number of passengers so we had to get two of them, only to arrive at a nearly overflowing with people beach bar directly after "distancing" in the cab.