Not sure if your questions are hypothetical, but I'll answer them as if they weren't.
These things are all subjective, and depend on the individual relationship and the people involved. It's going to be murky and situational even within the parameters of an individual relationship oftentimes.
When it comes down to it, we all have absolute freedom in our relationships. The question is, how far outside our partner's comfort zones are we willing to tread, and how much are they willing to tolerate? I don't think it's unreasonable to ask a partner to make some small sacrifices for the sake of the other partner's comfort or happiness, but asking or doing too much that bothers the other will strain a relationship. If such a strain becomes too extreme, the relationship may break simply because it's a more negative force than a positive one in a person's life.
That's why compatibility is so important. So both partners can stay in or close to each other's comfort zones most of the time rather than having to choose between denying their own freedom or making each other uncomfortable or miserable constantly.