Transportation from SSR to Amway

[CopasFamily]

We've reserved a town car for my DH and DD(8) to go from SSR to the Amway center on June 4 for the T-Swift concert. I've also reserved a return car, but am second guessing the pick up time that I gave Mears. IYO, if the concert starts at 7:00, what time should they be able to make it back to the drop off area of Amway to meet their driver?