I'm glad Mythcon is postponed so you can attend as scholar guest of honor in person.

I'm not paying a lot of money to "attend" the Worldcon this year online; Zoom and other online meeting software isn't that much fun to deal with. I'd rather go when I can be there in the flesh.

I watched a ballet online and thought it was pretty great. I don't watch plays in general, so haven't tried one online. I wonder how operas would work? I think anything with big musical performances like opera and symphonies would not translate as well as one would like because of the sound quality, but I do watch pop music videos online pretty regularly.