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Now that I've read those reviews, I think I would just end up worrying if it rained loads, even if it wasn't flashy sort of weather.
We stayed in a campsite in Porlock in north Devon years ago, and I was kept up all night thinking - that's an awful lot of rain falling, I can hear the river from here, Lynmouth's just down the coast, could happen here, tonight. Didn't sleep much.