Sorry to ask this again but it's because I've read two different answers in threads here and I need to clear this up before I go ahead. I am planning on getting a SETV here in the UK before I arrive in Thailand this November. My question is do I NEED to book an onward journey BEFORE I arrive in Thailand ? If so do I book the flight just before the 60 days or just before the 90 days ? ( 60 + 30 day extension) I'm planning on going to Vietnam to obtain another SETV once my 60 + 30 days have expired.....