Is there seating at the Amp theatre? Or bring your own.

A cushion and a blanket

Yes

Yep! Plenty of seats..

The seating is concrete steps, so bring a cushion.

I agree bring a blanket or a cushion to sit on because the cement benches are not comfortable after a while

The seating is concrete steps.i would definitely bring a blanket and or some cushions. Its only a short walk from the parking area so anything you do or do not use wouldn't not be far if you brought it just in case. if you brought your own chairs/seating i dont know if you would be as close as you would like if you were on the concrete steps using a cushion or blanket.

There's concrete steps so bring your own pads or stadium seats