Below is my 2 day itinerary.
Ferry to Mackinaw island
Bike to Mackinaw island state park,bockike on trails
Return the bike
Parasailing on island
Take carriage taxi to arch rock
If time permits:fort mackinac or lighthouse
Munising picture rock national lakeshore or tahquamenon falls
Mackinaw city historymill creek discovery park
Go back home.
Please let me know if i am missing anything.
Also which one is more worth it,Tahquamenon falls or MUNISING