@bshaurette I'd also recommend trying to stay abreast, e.g. through /r/aws, on things that are going on under the radar.
As @orangepeelbeef said, make the most of the in person aspect:
• Use the #HallwayTrack to meet new people.
• Focus on things that aren't recorded and available on YouTube afterwards (when I was there, there were some smaller seminar-like and more discursive Chalk & Talks that were interesting)
Finally, wear comfy shoes!