But as with all parties, someone has to clean up afterwards. Unfortunately, Thailand's rivers are often the receptacle for a whole lot crap following major events, which impacts hugely on the whole environment.
A friend living in Chiang Mai just posted this fantastic community event on Facebook that's coming up on May 2 - a clean up on the Mae Wang river, an hour's drive into the mountains from Chiang Mai. The event is being held by the people at Chai Lai Orchid Nature Bungalows, and they are offering volunteers a day of free bamboo rafting, a Thai BBQ and snacks in return for pitching in and helping to clean up the river.
Sounds like an awesome cause, and a fun day to boot.
*NB - rafting is at your own risk ... and even though Thailand's rivers are generally pretty tame, there are snags and little rapids that can make it quite hazardous. My daughter once went bamboo rafting near Chiang Mai - her raft was 'steered' by an eight-year-old boy, who took them straight though the middle of a rapid. The raft snapped in two, everybody fell off, some of the customers couldn't swim, and my daughter lost her Haviana thongs ... devo. Just a cautionary tale...
HOWEVER, this does sound like a fantastic, worthwhile event, so if you're in the Chiang Mai region, get yourself down to the Mae Wang River.
Anyone interested in volunteering should email: explore@ChaiLaiOrchid.com