I dunno, I've read about some who flash the voucher and get thru. Others have been told they get the money back at the processing center, but that didn't work. The processing center doesn't have money to give back, they're just there to take your picture.
You could drop off your party in the drop off lane, then go park across Kirkman at the TGIFridays.
Last year, I was going to drop off the wife and park at TGIFridays, but went into the main parking lot instead. Told the guy I wanted to drop off the wife, so he let us go and said to turn left and come back around. So we leave the ticket booth, and the dude was waving us right into the parking garage. Well, I did what he said and parked. Oh, the wife was screaming at me, they're gonna come after us, bla bla bla. They didn't.
Flash your voucher at the gate, if they say no, then tell them you wanna go to the drop off lane and park at TGIFridays. Or call and find out ahead of time from guest services.