The DEMO version only includes 4 pages:
http://tributaryfestival.org
http://tributaryfestival.org/search.html
http://tributaryfestival.org/about-us.html
http://tributaryfestival.org/prior-tributary-festivals.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page