There is a strong market for lodging before a faire, be it die hard rennies, families, or handicap attendees.
But what structures works? Balance of cost, speed of construction, labor input, materials, and cooling costs for summer.
For housing for groups, you need 55sq ft per bunk bed. So 200sq ft for 6 people, 800sq ft for 26 people.
Masonry structures are more expensive, but cool, quiet, stormproof, and low maintenance
Earthbag houses are cost effective but more labor.