Cycle Oregon have the best Showers and toilets at any event.
4 or 5 Artic units with showers for about 20 folk at a time. There were 2000 folk at last years event, and everyone had a shower at the end of each day and some in the morning too. They’d be hitched up and moved on to the next days campsite well before the first riders arrived. Maximum queue was about 5 mins.
They had loads of portaloo things too.
Best organised ride in the USA. 2000 places sold out for this year in 12 days. They have 500 or so tents which are set up in a village every night. If you pay the premium, they even take your kit bag and put it in your ready pitched tent.
I’m too mean to subscribe to that, but it was a huge logistical feat.
Business opportunity for someone to do the same here.