I have a multiple entry 6 month tourist visa...went to Immigration to get my first 30 day extension, paid my 1900 baht, got the stamp, all good. Then I noticed later a second stamp saying “to keep your stay permit re-entry permit must be made before leaving Thailand”. Since multiple entries are already permitted on this type of visa and I’m leaving for Vietnam in about 10 days, should I be worried I won’t get back into Thailand on my return?