Fans can stop by for a silent auction that features plenty of Ravens memorabilia and will run until 11 p.m. Friday.
Giansante said the evening will include a DJ and drink specials, such as $2.25 Miller Lites and $3.50 Blue Moons.
The DJ will be giving away prizes to the best-dressed attendees as well.
On game day Sunday, the restaurant will have half-priced burgers and $2.50 20-ounce Bud Lights.
Bateman's has Purple Fridays throughout the football season normally.
Friday's party will run from 5 to 11 p.m. Residents who bring in a flier on Bill Bateman's website will get 15 percent of their bill donated to the Susquehanna Hose Company.
"It should be a good crowd," Giansante said about this weekend. "It's fun, it's purple and you are helping a local cause."
At The Greene Turtle in Aberdeen, manager Lance Lader said weekends are always big for football fans.
The bar will mostly feature drink specials, like the "Purple Bomb" – Red Bull and grape vodka – for $5 and a Ravens shooter, also for $5.
He expects plenty of purple-clad people both Friday and on Sunday.
"Last Sunday, we were completely full, not a stool open," Lader said, adding the bar will be renting some stools for this weekend.
Coakley's Pub, in downtown Havre de Grace, will celebrate the game by cooking pit beef and Italian sausage in front of the restaurant, along with its typical Purple Friday.
Owner Dwayne Coakley said Ravens fans can celebrate with drink specials and purple shooters, which will turn into free "touchdown shooters" for every Ravens touchdown.
Although he does not know how many people will be out this weekend, the Ravens season has been good to Coakley's so far, Coakley said.
"The last couple of weeks, we have been packed to the brim," Coakley said. "It's wonderful. We hope it keeps going on."
If the Ravens inch closer to the Super Bowl, "we will dress it up a little bit," he said about the pub's atmosphere.
MacGregor's in Havre de Grace recently expanded and got a new deck, where general manager Alex Lee said the usual Purple Friday will be celebrated, along with drink specials for the game Sunday.
The bar will feature "pub grub" for the Patriots game, along with two-for-one draft specials and a purple Ravens shooter.
"People show up here in their purple attire as well," he noted about the customers.
Happy hour there will run from noon to 7 p.m., with a buffet included from 4 to 7 p.m.
"It definitely fills up in the bar," Lee said about Ravens games.