If you are looking for options other than camping on site at the venue there are a wide variety of options in Mount Shasta. 

There are also many free campgrounds in the area as well as nice homes with rooms for rent that you can check for availability on Airbnb & Hipcamp. 

The spring/summer is high season here and places book up fast! Please make reservations ASAP.

The Chamber of Commerce has the most extensive website listing different types of accommodations:

Chamber of Commerce: https://visitmtshasta.com/stay/

Additional Suggestions:

Mount Shasta Resort: https://mountshastaresort.com

Inn at Mount Shasta: https://innatmountshasta.com

Best Western: https://bestwestern.com

Loge: https://www.logecamps.com/mtshasta-ca