So Tombstone. Is it nice? It's very touristy. Lots of shops that sell most of the same stuff. If five dollar scoops of ice cream, plastic tomahawks, and native American figurines are your thing, you'll be in heaven. There is RV parking below the town. Per Junior"It's strange but I like the model train store".
I would recommend half a day there, have some lunch in the car and move on.