Are customers seated in groups even if there are only two people together? And do you need to make reservations?

You are seated with your party only.

No, each party is separate. No reservations or call ahead seating

I dont believe so. We walked in for breakfast. Also for lunch. There were only 2 of us and we got a booth by ourselves.

No reservations, not seated in groups. Two people together. Great food, and service.