You have got to be kidding. You go and bring workers from somewhere else into NYC and and it will be a bloodbath. It will not happen if the unions say so.
It only takes one Union to refuse to work and they’re done.
IBEW controls all electrical, plus nuclear workers - that’s tons of retired/ex-military people. We get IBEW members to refuse and if Bloomberg was to try and pull anytime of ridiculous crap you’ve got 3/4 of the nations nuclear workers (except for reactor operators, who by federal law can not strike) on strike plus electrical workers across the entire country.
On top of that, there would be blood.
This can be done.
I used to deploy tradeshows in NYC and Philadelphia. The unions always play hardball. If you let the union workers work just one minute past their work time, they charge you overtime immediately. And you cannot work on the booth yourself, the union people have to do it, because it’s their “job”.