In my working place, we have to remove our shoes when entering the office building and change to sandals or slip on or you go barefooted. So you can do away with your high heals and Blister Prevention patches.
I still remember when I was working part time in a company while waiting for my STPM result and university intake, I keep a few blister prevention patches because I have to wear formal office attire to work, that includes high heels. No matter how season my heels are, it still cost me blister when I wear them. I think my skin is too thin.