That's an impressive ticket price for the event! Here there are festivals with little NFT gallaries with a number of other galleries all in the same neighborhood - free. Maybe not as high profile, but still... for new technology you would want to onboard as many people into the art right? I paid about that much for a 3 day Blender conference in Amsterdam though, in October, and I do feel it worth it - so I guess if you were big a big fan it might be fun.
But at the end of the day, supporting your artists and those who have inspired you, if you can and have the time to do it, I would... still do it. Though if publicity was clear from the beginning that might have been much nicer and less doubt inducing.
Blender conference is amazing!