Cost of tickets : 4 per day , If Martina gets to the final thats a maximum of 9 days she could be playing so 36 max.

First company I searched for flights came up with 510 return.

First hotel I searched came up at about 5 per night, 12 nights = 60.

First calculation of trip = 606 + food etc.
Interested? That price will come down I'm sure.

Note : Bangkok may sound a funny place (Bang cock hehehe) but its not all fun and games :(
Also, on google when I typed in 'hotels thailand' the 3rd link down was 'gay places to stay in bangkok' :rollin