I went to a couple when they were in Mountain View. I'm sure they will have a Cybertruck on display (as well as Roadster and Semi), so it might be worth going just for that. The actual meetings I went to Elon gave a presentation that was interesting. Q&A section had a few good questions too, but many were terrible. There was also a good buzz before the meeting as people mulled around looking at the cars and talking Tesla.