Oh lordy. YEah, what everyone else said.
To be honest not sure I'd spend a ton of money on this. Maybe one day in the park. It will be insanely crowded.
I hope your kids are early birds. Get up early and get to the park. Come back for lunch.
Maybe, since it will be so crowded, you should think about finding spaces to watch the parades. That might be your best shot to see things that your kids wouldn't otherwise see. Because mostly they will see people's butts as you wait in long, long lines.