Final 2018 Big Sable Bus Day is Saturday. HAMLIN TOWNSHIP — The Sable Points Lighthouse Keepers Association is hosting its final bus day of the 2018 season out to the Big Sable Lighthouse in the Ludington State Park on Saturday, September 22 from noon to 5 p.m. S Musician “Fremont John” will be performing outside of the Big Sable Lighthouse.…