Just pointing out that it wasn't a coincidence that everything was a walk-on. I get giddy when I see rainy, crappy weather, because it means that the parks will be dead. I plan for crappy weather days. My best memories of parks are going when its crappy weather and a ghost time.
We have been lucky, with all the times we have been to the parks we have only encountered a heavy rain once since 1994. That was until December 2018, we had two days during our trip with heavy rain and both days we were going to HS. I was surprised that the rain did not seem to deter people from visiting, the crowds seemed just as heavy as the one day it didn't rain when at HS. Go figure.