Many many people have no idea what Relay For Life is. If you've not been to a relay before, you'll probably have a few vague ideas but it doesn't really become clear until you experience the full 24 hours.
We produced a booklet "A Rough Guide To Relay For Life Stockport" which explains in quite a lot of detail what relay is. Harrow Relay have put together this page showing just what relay isn't... so take a look...
http://www.rfl-harrow.org.uk/2015/04/6-myths-about-relay-for-life/