Sonic Drive-In

I did an online pickup order today and it said 5 minutes when I arrived to the location I pulled up to a stall they said you have to get on the drive thru line. There were already approx 10 cars on line. When I finally got to the drive thru speaker she said pull up. With 4 cars still in front of me I parked and walked to the door. I received my 6 drinks that I ordered 4 of which were slushes almost totally liquified. I will not be returning to this establishment.