You'll need to take a Ferry from Mackinaw City. Please see the travel page for Ferry recommendations. I recommend purchasing a ticket in advance, however, no reservations required. The ferry typically runs between 8am-8pm, leaving every hour.
Pellston, MI
You can walk, rent a bike, or take a horse taxi (fares are typically $7.50/pp & are usually cash only).
Carriage service will be provided round trip from the Inn at Stonecliffe to St. Anne's Church.