We've got tickets to see Springsteen (again) in Hyde Park but the weather is not looking good at all. Tomorrow night's concert there has been cancelled already because the ground is too wet. The event people have said that the show is going ahead and they're laying chipboard down to cover the grass, though rumour has it that the trucks can't get onto the grass to lay the boards...so it's not looking good!!
Of course the festivals all go ahead whatever the weather, but I'm not sure how "protected" Hyde Park is from being churned up, the area where the queue will be is right by Marble Arch so it's all really visible to tourists...guess there's nothing else to do but keep fingers firmly crosses!