I know we are eating there for Chip and Dale too! I posted my ADRs and someone replied they heard that is might not be a character meal. I sure hope not - we are looking forward to time with Chip and Dale.
I am not an expert by any means, but I've seen this come up in other threads, and I think it's Garden Grove, which is at one of the resorts, not Garden Grill at Epcot. Hopefully someone who knows way more than me will chime in!