I'll probably do Solvang this year also, but after 3 years of riding & racing in Holland & Belgium, (and not wanting to risk ruining my Brooks saddle), I feel the same way about rain.
The problem is that SCOR expects us to register several weeks in advance, so if you pay the fee & reserve a hotel room, you're screwed.
This is why I feel entirely justified in bandit-running this one if it's dry. I'll ask if they offer race-day registration, but if they tell me 'Sorry, nope.', I'll simply say 'Don't be!' and bring a few bucks and two extra Clif bars on my bandit-Century.
Public roads are open to all taxpayers that last time I checked.