Toilets and showers
From British Juggling Convention Wiki
Hopefully your venue has enough toilets and showers and you have 24 hour access to them.
If not, you will have to hire some portable ones in.
Dixies, aka "Turdises" are chemical toilets that require no mains water or drainage. After copious usage they stink very badly.
More pleasant toilet blocks are available that drain to a large tank. These require mains water and may also require power for lighting.
Both kinds of loo may require emptying during the event and this costs money.