While I normally agree with almost everything that @woodcock says, I must disagree a bit here. I know of at least 1 session at .conf2018 where the audience was told that recording and slides would be published but when everything was posted, that session was not published at the presenter's request . So if the content is critically important to you, you should go and make your own audio recording and take pictures or you might not ever see it again.
Also, be sure to monitor the #conf2020 slack channel and announcements inside the app or you will miss out on important details like Free drones while supplies last at the Community Lounge which lasted for about 3 minutes (no I did not get one) and also The "NOCturnal" TShirts are in booth XYZ near the FuBar in X Hall (I did get this).
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