I will be in Playa Del Carmen and Cancun for about 2 weeks really not by choice...family thing. Where would be some good places to go to see Mexico with out all the touristy B.S. Im planning on hitting Merida for a couple days any other day trips or just a short trip to get away where I could eat and experience something other than the Banana Republic...I live in America I dont want to travel to there.
Isla Mujeres (near Cancun) is a nice, less aggresive, still a bit touristy gateway. Merida is a good choice. Coba or Chichen Itza is a must, go early in the morning to skip the tourist craze.
Any one horse Mayan village would suit-except of course no one speaks English.
2nd the suggestion for Isla Mujeres. Take a boat/ferry ride out to the island and spend a day there. Touristy but charming - not quite as American as Cancun resort area. There are parts of the island which is completely for tourists but also areas of mansions, suburban homes and even not so nice sheds in the slums. Small island, but definitely diverse. It should take a few hours to ride/drive around the whole island (rent a golf cart or moped/motorcycle to go around).
I also took the bus into the downtown Cancun area - just to get away from the resorts for awhile. It was quite an interesting ride to explore a bit of the city - got a little lost but I saw a little more than the typical resort-tourist.
Going from the coast to Chichen Itza will also show you a more "real" image of how Mexican people live.
The Copper Canyon. Look it up an a search engine and see what it has to offer. It's almost a sin to do Mexico without seeing it.
Just go inland about 10 miles and you'll find the real Mexico--or make the drive to Merida, the capital of the Yucatan state. If you want to go a short ways, then go to Isla Mujeres--and go towards the eastern end of the island. It is still fairly touristy, but less so than most of Cancun.
As far as Copper Canyon, it is about 2,000 miles from Cancun--so I don't think that's going to work in this case.