Tracking links and QR codes let you generate a distinct attribution link or code for every channel you use to promote an event, from a social post to a printed flyer to a partner newsletter. Each one ties back to the actual sale, so the path from first click to checkout is never a guess.
This matters because marketing spend without attribution is just spend. When every channel has its own link or code, you can see which poster, post, or partner send actually moved tickets, and line that up against what you paid for ad placement, giving your team a real read on where to put the next dollar.