How to walk with crutches in the rain as an amputee

My sister in law is taking my husband and I to Indianapolis to visit some friends. See how I walk on a very slippery deck, down some steps, on gravel and getting in the backseat of a car.
TIP: I wear a backpack because purses do not work with crutches, in my opinion. Backpacks are great because I can put loads of things in them, they do not swing around, they offer a centered weight, and the SAFETY aspect is, someone can hold the loop of the backpack while you go up and down stairs(as seen in the video my husband does this) or walking on rough terrain, which gives me more peace of mind. I also just bought some TORNADO TIPS that have a better grip on the bottom to help with slippery areas and they absorb a bit of the shock while walking it seems.