In a couple of weeks, when I start a lengthy vacation, I just might show up for this, and give it a try. I usually work at night, so can't usually do stuff like this.

+1 on the parking issue! There is not nearly enough parking in Montrose/Midtown/Downtown, so almost all private business parking lots have contracts with wrecker services to tow all non-customers, and customer means someone who is currently on-site. Going into a business and buying a small item, then leaving your car while you go elsewhere, will still get you towed.