@Edent there is a lot of great advice so far, what I would add is if you bring a backpack, it might be best to keep it in your lap during talks (especially in room Janssen, mine was soaked in beer from a spill or more in the above rows).

This has never been a problem before (for me), but last year I was pickpocketed in the crowd outside Delirium (only a vape, luckily).

Bluetooth can be very congested so if you wear headphones make sure they can also work wired.

It is really neat, enjoy!