I'm about to book 9 flights from DTW - MCO

Price is as follows online

FLIGHT PRICE
$775.98

Base Fare $775.98
Flight $418.68
Unintended Consequences of DOT Regulations $33.48
Passenger Usage Fee $323.82

GOVERNMENT'S CUT
$287.64
Security Fee $100.80
Passenger Facility Fee $81.00
Segment Fee $72.00
Federal Excise Tax $33.84

Total Due$1,063.62

So are you all saying I can go to the airport and pay $323.82 less?

I'm in Toronto so I'd have to drive to IAG (Niagara Falls) but it might be worth it.

Will I also save some of the Passenger Facility Fee?

Thanks