My mum just got SETV in London arriving here in Thailand soon. It's for approx 8 weeks. If she wants to take a weekend trip to another country can she pay 1900 baht or whatever for a re-entry permit on the way out of BKK airport? Or SETV is strictly single entry? Sorry for dumb question. Thank you. I can add a photo here of the visa when she gets it stamped in her passport today.