I restore via iTunes and it really doesn't take too long - I think my lengthy restore time has to do with all the 2-3gb apps/games I'm reinstalling.

If you don't have game saves or health/workout data though, it's always nice to do a clean install - seems like everything runs a little less buggy that way.
Yes! Went to one during San Diego Comicon I think two years ago and it was fantastic! Looking forward to this one here in Phoenix - they've added new Breath of the Wild scores I think, that that'll be neat to see/listen to. They put a huge screen up and show game footage during the symphony - it's a wonderful show.