thinking about renting a minivan for the 6 of us and a folding electric wheelchair. Is there parking at the shoppe? Can an electric wheelchair be easily driven inside the shoppe?

Actually no, it's a very small place. However, you'll be okay to visit it. You might have a hard time to park your minivan. It's not that easy to park around there.

Unfortunately no, you should park nearby and walk there

Unfortunately there is very little parking and the shop is pretty small inside. Six people in the shop last time I was there and it was hard to turn around. I don't think the wheelchair would be able to move around to much.