I do. It's damp on a campsite in the mornings, however nice the weather and DS2 was begging to go for a shuffle but I didn't really want him getting soaked through first thing in the morning. I bought waterproof trousers in case it rained but he ended up wearing them every morning. He loved shuffling around after the other kids and as soon as the ground dried out we whipped them off and hey presto dry shorts.
Can't reccoemmend them enough. I bought the un-lined fully waterprrof and waterprof overboots. Big enough to wear next year too........
BR