I'm a US citizen and plan to enter Thailand Jan. 10 from Philippines on a 30 day tourist visa. It's my understanding Thailand will issue only 3 free 30-day entries in a six month period. I plan to extend 30 days at immigration within Thailand for 1900 baht, so I'd stay until about March 10 and then exit the country. Will this 60-day period count as a single entry out of the three per six months, or am I using up two of the 30-day entries?