Need to sort out the pick-up experience to achieve the best rating

We had to wait ages to pick up the car. I was only 3rd in the queue but waited over an hour - it seems the Thrifty staff spent ages trying to upsell each customer, hence the wait. By the time I was seen, the queue was around 20 people long and growing. By contrast, the drop off procedure was swift and efficient and the car itself was as ordered and expected