For me, it's any store, especially large ones, not just grocery stores. I'm also autistic and aside from the noise, the smells and just too many people, the thing that really gets me are the meanderers. Going way to slow, in my way and just in that right spot where I can't get around them. Oh, and also, the chatters, you know those people that stop right in everyone's way to catch up on the last 30 fucking years. Seriously, here's 5 bucks, go get a coffee somewhere and get outta my damn way!