It is obvious that many Cali owners are now buying various shower tents/contraptions so they do not have to use the communal facilities. However, unless you use some sort of tray etc to catch the waste water and then dispose of it via the sites disposal facility there are going to be many damaged pitches and unhappy site owners. If you do shower without a tray please only use appropriate biodegradable soaps and shampoos. Normal ones will destroy the grass and cause issues for us all. Sea to Summit are a good supplier but there are others out there. Mrs wasn't initially happy she couldn't use her normal high lathering shampoo but she has got used to it now and even prefers it - especially as it is environmentally safe.