Voluntary bumping

Afternoon all, we're booked to fly U/C on the 7 to Lax in September, first night on arrival were just in an airport hotel so going on the later flight wouldn't be a big deal. Previously I've been voluntarily bumped from flights quite a few times when I've not needed to travel so I was wondering what Virgins policy on thi would be? Not over bothered about the compo (although it would be nice), just keen for a few more hours in the clubhouse and a burger lunch!