Most shops won’t entertain “window shoppers”, if you want the vehicle to go on the alignment rack, you need to bring enough money for a wheel alignment.
About ten years ago the dealership set up a wheel alignment check station on the service drive. It was a sales tool for the service writers to promote wheel alignments, but not very accurate. That lasted about two years, I believe they received a lot of complaints about the driveway attendants monkeying around with the vehicles and pushing cars back and forth leaving handprints on paint.