Just a heads up for everyone bringing light sticks to NA shows – this information is being displayed in the official Le Sserafim light stick app. There's no need to pair anything or enter seat info ahead of time, but you should make sure to have the latest firmware before heading out. Mine was at version 1.2 and took around 30 seconds to update with the app.
There's also a Weverse notice from a few months ago about this here: https://weverse.io/lesserafim/notice/25952
by -MarisaTheCube-