NOTRE DAME – The crowds are slowly making their way to South Bend for the big match-up between Notre Dame and Michigan this weekend and it’s a heated one.

But it's a night game - and that's a big deal to some.

Prime time is exciting for fans, but local businesses are scrambling for a creative way to make up money since they'll lose fans to the game during the dinner hour.

The energy is building.

There's electricity in the air.

The Fighting Irish battle the Wolverines on Saturday night - only the second night game at Notre Dame since 1990.

For football fans, it means an extra long day of tailgating, so restaurants are spicing up their schedules to make sure this weekend isn't a blow to business.

"We don't have a closing hour. When people stop eating and drinking, that’s when we're closing," said Jonathan Lutz, owner of the Mark Dine and Tap in Eddy Street Commons.

Lutz has quite a few reservations set for the weekend but said the later the game starts, the fewer people they seat in an evening.

"It does have a huge impact on your revenue," Lutz said.

LaSalle Grill says it’s hard to predict traffic flow on Saturday. They're opening early at 3 p.m. for lunch and will close early at 10 p.m.

Villa Macri in Granger will stay open until 2 a.m. to please the night owls after the game.

Fiddlers Hearth said they'll be packed for lunch, but they don't expect a dinner crowd.

"You definitely don't see the business late on into the night," said Tony Nafrady.

But what if the Irish walk away with a victory? Will fans hit the town?

"If they win, everyone shows up for their reservation, and it’s happy, it’s expensive wine, appetizers, drinks, desserts," Lutz said.

And a win for the Irish is, by default, a touchdown for business.

“We are definitely rooting for a win for Notre Dame," Lutz said.

Unlike those sit down restaurants, bars like Mulligan’s that are close to campus see a steady business flow on game nights.

They tell us the people that don't go to the game overflow from the tailgate lots into the bars.