i find all of Thai officials like Post Office are very smartly turned out and my gesture of respect is appreciated.And no hassle as practically rest of year dressed in shorts , sandles and casual short sleeve shirts .
I am from U K and currently there.Lived on and off in Thailand for several years .i deliberately brought with me a good pair of long trousers , socks , shoes and long sleeved shirts especially to put on when visiting Immigration or a bank .Called respect to host country and have never had problem arrival / leaving or Udon Thani immigration .
No change Thailand at present .The U K vaccine is the Pfizer one , the Oxford /Astra Zenica expected shortly and Thailand pre ordered this .From the details on the various likely vaccines i prefer the Astra Zenica and Thailand may ask for this with future visa applications .
Not a career politician but this PM has had the sense to follow medical advice and the stats to date have proved that right .No clowning about like U K.i do hope no further lockdown will be needed .