I think Luvmy2Js was there the same day we were, a week ago Monday. lol Tho, by the sounds of these posts it may rain harder than it did for us, just break out the ponchos and umbrellas and make the best of it. I think my girls had more fun using an umbrella (not much use for 'em here in Phoenix, 141 days without rain and counting!). lol
The rain (or even the threat of it) should keep the crowds down, so try not to dwell on it and go have fun. Take a break midday (and evening?) for a change of clothes, and you should be fine. The only rides I know of that closed last week were Alice's and the teacups, so the park should be yours for the taking (unless it's a super-heavy rain and/or lightning).