The posted coordinates will take you to a stage in the downtown Mattawan park. Parking is along the street north of the stage. There isn't a better way to get to know the cachers in the surrounding area, than to stand shoulder to shoulder with them for 30 minutes in a tight squeeze. The more cachers that show up, the tighter we must stand together.
At 8:30 I will take a picture, then everyone can exit the stage and go their separate ways to church, football or may I recommend, caching in the area. I will be caching my way to Bretina's "The Fallback Gathering (2015)" (GC5JT42) in Ada, MI.
This is the morning of the time change (fall back), so you either get to sleep in one more hour, or you will be an hour early if you forget to set your clock back.