I can't remember the exact time, but it was just before the band came down Main Street. Not sure how much earlier they march, maybe 15 or 30 minutes prior? We'd picked up ice cream and gotten around to the area a few minutes before that and were just off center when we arrived. But the people in the center/curb facing the castle were just there to film their kids in the band and as soon as they'd marched by, those folks left and we scooted over to direct center.
Yes, we were sitting on the curb. A few minutes later, they strung the rope across the Emporium side to the hub and more of the FP+ people behind us filled that up and sat directly on the street.
This is Stella, who was with her grandparents, meeting the White Rabbit. The red-haired Princesses Ariel and Merida made a huge deal from their floats to her about her red hair and she was just adorable. Hint: remember to ask people for email addresses if you know you've gotten a good shot for them. They are usually super appreciative!