The thing no-one wants to talk about! I have a few festivals coming up (no hookups) and am getting on in years. It's not always feasible (come on - you all do it!) to just nip round the back of the van - especially for women. So I give in - I'm going to get a wee bottle. There are loads on Amazon, but every one seems to have an equal number of people saying they are not leak-proof, and those who say they are! Any experiences you're willing to share?