Red Rocks Venue

Lady selling beers asked for my ID, then said “its expired” with some attitude, when it was actually 7 years from expiring. So i handed it to her to check closer. Im 30 btw. I told her what i want and then hit no tip before the chip on my card could even be scanned. She says “wow thanks nevermind” and walks away without making the sale because i hit no tip. Im sure her company would love to know they arent selling as much because of her. It felt incredible and i went to the next beer stand and ordered with no tip. Only places im tipping at are sit down restaurants now, and have been doing that for about a year.