We went to the Backyard BBQ with DS, 21 month, in November last year, so it was running, maybe just limited schedule.
Of all the shows I've been to, I was least impressed with this one, both food and character interaction. There were hundreds of people and only a few times to talk to the characters, so we didn't even try to get up there.
There was a nice variety of food, but just picture a large company picnic and you'll see the menu. I think you get better food value other places.
Also, we found out when we got to Fort Wilderness that we had to take a bus (long ride) to the show. We weren't prepared, packed up the babies things fast and missed the bus. We were late and nearly didn't get in. Needless to say, I was probably too tired and hassled to enjoy it in any case.
Sorry to be a downer, but this is really the only unmagical (is that a word?) moment that we've experienced in over 20 years at Disney World. Many of the folks around us seemed to be having a great time. Maybe it was just my expectations that were out of line.