All of my trips my whole life it has rained, and my trip this past May-June it poured daily and for long periods of time. It didn't affect anything at all! As long as there is no lightning and it is safe to do so, we will continue walking/eating/shopping/riding unless instructed otherwise. A nice thing about the rain is it really clears out a lot of the crowds. I'm not a fan of ponchos but my boyfriend is, so he wore one and I wore a really light hoodie and it worked fine. I always say "we're not going to melt!" so as long as it's safe, we go for it. I won't let rain ruin my day or my vacation, we just roll with the punches. Last trip it was torrential in MK, and when we came out of Be Our Guest, there was a double rainbow over Fantasyland and it was breathtaking! We've also done the water parks in the rain (no lightning obviously) and found it to be really fun as well. We're already wet so what's a little extra rain?!