I do enjoy peeing while I'm out and about, whether shopping, at a bar or just going for a walk. As long as it is not interfering with the other people It's fine, but that's why I will never purposefully mess when out around others even at ABDL events I'd be reluctant to do that, no one will know when your wet/wetting but nobody wants to be stood next to someone who smells of poo.
I must admit though there is a certain smug satisfaction when your out and you overhear someone complaining about how badly they need a toilet (for instance on a bus stop) and there you are quietly peeing into your nappy without a care in the world.