

It’s an apt: shared walls, shared noise. The only way to avoid this is to move into a home that doesn’t have shared walls and even then you’ll have noisy neighbors.
Be as loud as you need to be within reason.
Don’t worry about how loud they are, and ignore any retaliation until someone talks to you about your noise levels.
Consider wearing slippers indoors.
Consider buying a rug.
No. I did switch to eating larger shrimp so there’s less work involved.
There are ways of cooking shrimp that break the shell down to the point that it’s more like crispy salmon skin.