Sounds like a lovely place to visit -
"However, unlike the islands, Pai (pronounced more like the English 'bye' not 'pie') is just as popular among Thais as foreigners. During the peak of the cool season (December and January), thousands of Thais from Bangkok crowd the town, making parts of it feel more like Chatuchak Weekend market than a remote valley town in Mae Hong Son. Traffic jams aren't unusual during this time of year, and accommodation becomes so scarce that many are forced to rough it in tents.
Despite all this, the town's popularity has yet to impact on its setting in a nearly picture-perfect mountain valley. There's heaps of quiet accommodation outside the main drag, a host of natural, lazy activities to keep visitors entertained, a vibrant art and music scene, and the town's Shan roots can still be seen in its temples, quiet back streets and fun afternoon market."
