I think for security reasons the festivities should be canceled.
They were canceled by Reagan once due to the weather.
I attended the 2001 inauguration and parade. There were hordes of disrupters along the entire parade route shouting chants and trying to prevent Bush supporters from getting close enough to see the parade. They left trash everywhere when it was over.
I want to go to this year's inauguration but fear the organizing power of the left now that they have social media to rally their troops. They were nasty in 2001 but not violent. I also went to the first of 2 Freepers Inaugural balls. They were both wonderful.
This year I think that Trump , who has already said that he wouldn't take many (any?) vacations, can say that he needs to get started doing the work of the American people and skip all the parties.