Bulk water provision?
Given the issues with water provision in recent years, I wondered if it would be worthwhile having some central provision instead? E.g. a giant tanker at the top of the site, possibly with some piping leading down the site and taps at lower locations (powered by gravity, no pumps required). There are companies that do bulk water delivery for events, e.g. https://www.watermills.net/events-and-festivals.html
Alternatively, given the existence of one mains water tap on site this year, is there prospect of getting any more of those? :)