Sleep. For the first time, we had a sag wagon this year when we did a tour of Niagara Falls & Canada. We did a combo of B&B's and camping, and because we had the sag, I could bring a nice thick foam sleeping pad for camping. It worked out great. I had just resigned myself to not getting much sleep on tours anymore because sleeping on the ground was causing me hip pain. I hope we can do more tours that way.