If you go the right way, you will be fine. O The reason is that when walking and lifting the feet, the toes are upturned, and the water drops are thrown on the vamp due to inertia. Keep your feet flat and walk slowly to minimize the inertia of water droplets.
Walking posture is generally difficult to change, so you can only walk slowly, the slower the better.
Wear rain boots or put a plastic bag over your shoes.