List of where to go in Thailand?
Which one off these would you knock off in Thailand and why?
I am only going for 3 weeks and want to see and do as much as i can within reason
Many thanks
Chang Mai (21st-24th)
Sukhothai – Unesco (25th-28th)
Pattaya – (29th-2nd)
Phuket- Phi Phi Islands (Snorkeling) (3rd-7th)
Ko Samui – Ko Pha Ngan (Full moon Party on the 9th) (7th-11th)
Bangkok – Koh San, Ayuthaya (12th-15th)
Chiang Mai : one day for visit Doi Suthep and temples in the city. another day to Chiang Rai to golden triangle , visit hilltribe or go for elephant trekking
Sukhothai : One day cycling in the ancient city to visit temples. Bring good guide book with you. Another day, probably go to nearby province like to Kamphaeng Phet to see another ruins.
Pattaya : Full day tours to Coral Island , see tiffany show or alcazar, minisiam , go cart , bungy jump , nongnuch tropical garden , ribley believe it or not , etc…pattaya is not only for sex tourism 
Phuket : Around Island to see sunset at Phrom Thep cape. Phuket Fantasea show , Coral Island Day trip. Spend at least 1 night in Phi Phi so you can get to the view point in the evening to see lovely sunset and see both beaches of island. bring torch with you. Also Phang Nga Bay Tour ( so called James Bond Island ) , Bungy Jump , whitewater rafting , waterfall
Samui : Around Island tours to see landmark hin ta , hin yai and Na Muang waterfall. Full day kayaking at Angthong National Park. Then get a day trip to Nang Yuan and Coral Island and ask for drop off at Pha Ngan island.
Bangkok : Grand Palace and city tour, full day to floating market , full day tour to ayuthaya , thai boxing , night life in khao san road?
lots of good deal in my profile
Thai wedding entry in Surat Thani Thailand Near Bankok Ko Samui Ko Tao Phuket Area