Put the QR where people wait
Nobody scans a QR on the way to something fun. They scan when they are stuck: in the bar queue, at coat check, waiting for the photo wall to clear, in the line for the bathroom (yes, really).
Walk the venue before doors open and find the three spots where people stand still for more than a minute. That is where your signs go. The entrance is the worst spot of all: everyone is busy finding their friends.
Print it bigger than feels reasonable. A coaster-sized QR works from about a metre away. A postcard-sized one works from across the bar.




