We've booked a campsite for August and they've just contacted us to say we need to bring a portable loo or won't be so allowed on site. This is to comply with government guidance that you should have one loo per bubble. The onsite loos will be available for emergencies if you are "desperate". I don't mind the idea of buying and using a portable loo but I'm a bit worried about taking it home in the car. I'm not sure we'll be able to clean it properly on the site - we might have to use it for everything
. Any advice?