Good question about the 11:00 lunch time. Papermill Drive is a separate exit - NOT the one for Sam's Club. If you are coming from the West (heading east), Papermill will be a couple of exits further down the road. Take the Papermill exit and continue East on Papermill. (If you get to the interchange for I-640, you have gone too far.) The store is on the left side of the road. Not too sure of places close by there for eating lunch, though.
I can't positively say right now if I can meet up, but will certainly try. Sounds like a lot of fun. I haven't been to Mammaw's since they moved to their new store.