Port Royal Park is located in Foster City on Port Royal Ave. This is a natural grass field.
From 101, take the Hillsdale Blvd exit and go east. Turn right at the third light onto Edgewater Blvd. Port Royal is a semi-circle that intersect Edgewater at TWO locations.
Go PAST Boothbay Park and turn right at the third street onto Port Royal Ave. The park is on the left.