re:Invent has gotten very large. And AWS, to their credit, is especially good at doing session videos. I haven't attended in a few years and, if I did, it would be for reasons other than attending sessions. (And, given the size and absent specific booth/meeting responsibilities, I see little reason to go.)

That said, I attend lots of events. But it's mostly for meeting with people and absorbing the general zeitgeist. Breakouts/booths are just the window dressing.