Swannies - Rain on your wedding day?

What if it rains? I'm going to call Swan Club also for advice, but I was wondering if any swannies had a game plan for rain that they might want to share. Where else would all the group photographs happen?

I bought a big white umbrella so that I can at least get a couple pictures outside, but that doesn't cover the attendants and family, and if its a real downpour...