Comfy Crappers
Comfy Crappers will be supplying and operating their fresh, hygienic and environmentally friendly composting toilets at Bestival and Camp Bestival this year in addition to the free toilets that will be available. You'll need to pay a small amount to use them (on a 'pay per poo' basis) or you can buy a wristband in advance from thier website which will entitle you to infinite use of their facilities over the weekend.
Head over to www.comfycrappers.com for more info, to read their visitors' comments and to download the wristband form.
And then relax knowing that all your toilet worries are over!