If you've never been to Sturgis:
What you should bring: besides yourself...
Willingness to serve
Map of the Black Hills - Plan on some good riding.
Location of the Church - (services at 9:00 each morning).
Water bottle (It can get hot during the day - stay hydrated).
Blankets (It can get cold at night).
Sunscreen
Raingear (possibly an umbrella) - it usually rains at least once.
etc...