If by chance, your hall happens to be part of a church, you could ask permission to use the sanctuary.
Laying quilts over the pews, can put on quite a show!!
If you're wanting more stands to hang quilts ... any chance that you could arrange with the group and hour away to borrow theirs? Of course, with the understanding when their next show comes, they can borrow yours!
Sounds like you already have plans well thought out ... Good Luck!!