I went on the Walk in Walt's Footsteps Tour in February. I enjoyed it, but thought it was a bit overpriced for what you actually got. A guide told us facts and stories about DL as we made our way into the park and down Main Street. We were supposed to go into the Disney Gallery, but it was closed during our visit. We did go into the lobby of Club 33. It finished with lunch/dinner at the Golden Horseshoe watching the Variety Show. There were definately things I hadn't known that I learned on the tour. I had been hoping for a little more behind the scenes stuff.
If money is tight, this doesn't give you a lot of bang for the buck. But, if you want a full on Disney experience and you're not strapped for cash, I say go for it.