Other then a fast food type joint I've never seen Pepsi being served in a restaurant. Pepsi is nasty but I don't drink coke or any other sugar water anymore.
en.wikipedia.org/wiki/PepsiPepsi rivalry with Coca-Cola
Coke still outsells Pepsi in almost all areas of the world. Saudi Arabia and the Canadian provinces of Prince Edward Island, Newfoundland and Labrador and Quebec are some of the few exceptions. Pepsi had long been the drink of Francophones and it continues to hold its dominance by relying on local Québécois celebrities (especially Claude Meunier, of La Petite Vie fame) to sell its product. "Pepsi" eventually became an offensive nickname for Francophones viewed as a lower class by Anglophones in the middle of the 20th century. The term is now used as a historical reference to French-English linguistic animosity (Dufing the partitionist debate surrounding the 1995 referendum, a pundit wrote "And a wall will be erected along St-Laurent street [the traditional divide between French and English in Montréal] because some people were throwing Coke bottle one way and Pepsi bottles the other way").
Other regions where Pepsi outsells Coke are in central Appalachia, the state of North Dakota, the predominantly Mormon region in and around the state of Utah, and the city of Buffalo (by a 2-1 margin), all in the United States. More importantly, Pepsi outsells its rival in grocery and convenience stores in the U.S. (regarded as an indicator of consumer preference), with Coca-Cola's dominance in exclusive restaurant, movie theater, amusement park, college, and stadium deals giving Coke the overall sales advantage. In the U.S., Pepsi's total market share was about 31.7 percent in 2004, while Coke's was about 43.1 percent.