When the team is on the bus heading to a match, they are going from their school in NJ to another school in NJ. However, the shot of the road they are driving down is in Rockville Centre, Long Island, NY (one of the admitted locations where the movie was filmed). In traveling from one school in NJ to another school in NJ, there would be absolutely no reason to pass through LI.
Mario's Pizzeria is a Long Island chain pizzeria and has no presence in New Jersey.