We have set up a hotel block at the Cambria Hotel in Rapid City, SD. If you choose not to stay here there are many other hotels to chose from. Some suggestions are the Holliday Inn-Rushmore South, Holliday Inn-Downtown, any of the hotels near Watiki Waterpark, and the Alex Johnson.
In the Black Hills, there are many beautiful options to stay at during your time. Hill City, Keystone, Deadwood, and Spearfish have many accommodations for your stay in the Black Hills as well. The Black Hills are a beautiful place to camp in cabins or tents for those who do not want to stay in hotels.