The pro shop entrance at Billy Caldwell. There's no clubhouse at the course. There's bathrooms behind the pro shop.
Billy Caldwell's pro shop has the standard stuff you need at the course. Beverages, golf paraphernalia like golf balls, gloves, etc. They have snacks too.
I've always been well taken care of at BC. Sometimes the computers are running slow and it takes a bit to complete the transaction, but this is true of practically every golf course I've played at.