Ok, going to look a real ditherer here, but its a no-go for me
Chucked it down overnight here, big puddles, slippy floor, not nice. Just phoned Dorchester Tourist Info centre (well who else do you phone to ask if the paths are slippery :
) and they're painting a similar picture.
Really hope that it dries out for you and you all have fun. Will try best to be at the next one...promise