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Best answer
9
Minimum 2 nights Pai — 3hr minibus each way, 762 curves nauseating. Day trip = 6+ hrs on bus for 2 hrs there. Overnight or skip unless you fly small plane. Motion sickness meds essential.
4
Rented car — curves manageable slow. Still stayed 2 nights.
2
Sticky waterfalls + Pai canyon need overnight to enjoy.