One advantage to motel'ing it is that you can ride longer: no set-up time required, no tear-down time either. As for fees, camping has become almost equal in cost to inexpensive, small motels. We find that even minimizing our gear, we could not camp without pulling a trailer, as we ride two-up. I do not care to pull a trailer -- if we need a trailer, we might as well drive the car. YMMV.
We do not make reservations ahead of time, so we have tremendous freedom to quit when we like, unless we can't find a place to stay. Worst experience so far, since 2007, was we had to drive 40 extra miles to find a place. Quality of motels varies, but we've always found decent places thus far.
We added a trailer hitch, and a cooler rack, last year. That will allow us to pack some drinks, and lunch food, as we do get tired of restaurant food 2-3 times a day. It also reduces the cost dramatically.
By motel'ing it, we gain more hours to ride each day, as well as the freedom it brings. Camping was more fun when we were younger, but after a long day of riding, a nice, comfortable bed, is wonderful. Cheers!