I did a 5-day river rafting trip with a youth group through the San Juan. We camped on the plateau above the river and then spent each following night on the river bank. Summer time is beat since the cool water helps balance out the burning heat. However, it can also get really busy with other rafting groups. We never struggled to find camp sites but sometimes we had to wait to go through rapids or clear space so other groups could overtake us. All in all it was amazing and an awesome experience.