If you have the opportunity to partake in the making of donations to the monks, I would recommend it. I did this when in the village of Chiang Khan and was given all the information by the small hotel I was in and the local tour guide. There are vendors who come by selling rice to give the monks, and in exchange, they shower you with blessings. You can also by flowers to leave at the temple. Prepare yourself for an early morning wake up and a periods of waiting till the monks start their procession down the streets towards the temple for morning prayer. Plus, the locals love seeing visitors take part in their traditions and customs.