Check your County Extension Office. Ours has rooms with tables already setup. We can move them into any configuration we desire to sandwich our quilts. Our County Agent is frequently available to assist if needed. The only requirement is that we put the tables back the way we found them so they will be ready for any scheduled functions.
I find that extension offices in rural locations are utilized more than in urban areas. They are a resource of meeting rooms -- we hold our guild meetings and UFO's there free of charge. Many of our churches have started charging for use of their rooms. When I lived in the city, I never set foot in the County Extension Office, but now that I live in a small town, I use the County Extension Service frequently. Also, check your local Senior Citizen Facility, ours also has rooms available for meetings also free of charge.