The sign to a hole at the Vista Creek golf course shows the name of the real course - Canyon Meadows. This is seen at the toward the beginning of the movie, when Peter and his friend see Allister McGrath sneak off onto the course and fire off a few balls.
During the golf match against Arrowhead Pines, there is a shot of Allister McGrath's ball on the felt; at this time in the movie he wasn't a part of the Vista Creek team.