Most visitors come to Amphawa on a day-trip from Bangkok. One-way trips can be purchased for 80 baht from the minibus station near Victory Monument, just north of the Century Mall. The journey will take around 1 hour and 15 minutes without traffic. Departure times are roughly hourly, but depend mostly on when the bus is filled. Return trips may be purchased in Amphawa. Be aware that 1) tickets back to Bangkok will sell out 1-2 hours ahead of the official departure time, and 2) your ticket's departure time is not likely to be your actual departure time, since there is frequently traffic in the afternoons and the bus from Bangkok may be delayed by up to an hour. Don't mark yourself as the stereotypical rude Westerner by making a scene and trying to cram yourself onto an earlier bus.