Just got a re-entry permit at Phuket Airport and here was my experience (UK passport, "retirement visa") : 1. Desk is located at the extreme left end of immigration, desk A1. 2. Efficient and friendly. 3. Only documents wanted were TM8 and photo but probably a good idea to take copies of passport picture page and "visa" in case a different officer asks for them. 4. They only give single permits, multiples must be obtained from main office.