Last week, it rained Tuesday and Friday while I was at the parks. Thankfully, it did not lightning.
Things to think about. Wet shoes. Have a spare. I think newspaper helps dry them best.
If rain persists, a poncho can get very hot on a 90 degree day. Maybe carry both umbrella and poncho?
Zip lock bags or something to keep things dry.
Waterproof or resistant purse, backpack, etc. I love my Disney Vera’s but they get soaked quickly.
Stores and quick service fill up fast during a storm. CM won’t let you sit in a store because it’s a fire hazard, so be prepared to walk or stand.
On Friday, TT was running in the rain. I’ve been on the ride during rain, and it doesn’t feel good getting pelleted by rain in a fast moving vehicle.
The good thing is rain chases people away. So wait times go way down.