Having just attended Origins with almost the same protocols, it was super smooth and easy to simply follow the rules. Assuming the wrist bands that Gen Con will be using are similar to the ones at Origins, mine lasted all 3 days I was there without any issues (lasted through showers, etc). The only thing I'm interested to find out is if the they will be doing vaccination checks Wednesday during badge will call, or how early they will open up vaccination checks in the mornings. I just want to make sure I don't miss a moment of the exhibit hall being open :)
Yeah, I was at Origins all five days and my wristband lasted through everything - showers, sweat, a massive rainstorm - although after all of that it was pretty easy to peel off after the convention ended on Sunday.