My husband and I did the Grand Canyon Rim to Rim Packrafting trip in late September. Our guide, Michael, was AWESOME. If you're looking for an extreme adventure, this trip is for you. I would give JRI five stars except for the fact that the trip was pricey and we had a few challenges getting the hiking/backpacking permits, but Debbie at JRI was able to reverse our trip so that we could go on the days we wanted to.