Hotel booking options can be found here:

https://hotelblocks.theknot.com/EventPage7620999

These rates are discounted from the normal rates, but may not be the cheapest you can find.

If you are flying into the area, the closest airport to Frederick, MD is Baltimore Washington International Airport (BWI). Other airports in the area are Washington Airport (DCA), Dulles (IAD), and Hagerstown (HGR, a small airport close to Frederick).