 
 Cleaning suede shoes can be tricky, especially with spills like soda that leave sticky spots. Your friend is right to be cautious about water, as it can stain suede if not done properly. A gentle brush is a good start, but for tougher spots, you might need something more effective. For protecting them in a rainy city, applying a suede protector spray after cleaning helps repel water and dirt from puddles.
I've had similar issues with my suede boots, and what worked well was using Sneaker cleaner. It's a no-rinse foam that removes dirt and stains without soaking the material, and it comes with a brush and towel for easy application. That should handle the sticky soda spot and any marks from someone stepping on your foot without ruining the texture.
Once cleaned, wear them confidently to your next party, and they'll stay looking new longer with that extra protection.
 
  
  
  
  
 