Romano's Macaroni Grill is a casual dining restaurant chain specializing in Italian-American cuisine.
Stewie and his Ukrainian bride Zlata dine out with Aaron & Shauna at the Macaroni Grill in "The Marrying Kind". There, as he tries to steer Zlata towards a lower-priced entree on the menu, Stewie relates a story from his work at Enterprise Rent-A-Car. When the check arrives, he pays only for his and Zlata's meals and directs the remainder to Aaron and Shauna.
Later over another dinner, Stewie allows Brian to have sex with Zlata so he doesn't have to but reserves the rest of the marriage chores for himself.