Husband chafes against in-laws’ family dynamic

DEAR ABBY: I am a gay man. My husband, “Isaac,” and I have been together for 21 years, married for nine. I’m having challenges with his sister. Over these 21 years, I have observed that any decisions involving their family gatherings and vacations are strictly determined by his sister, with no consideration given to whether the time, location, etc., works for Isaac. Adding insult to injury, when he has expressed hesitation or a desire to do something else, his parents step in and pressure him to do what his sister wants. Their mother once even stated, “It’s just easier to do what your sister wants.” While this might sound cute to some, Isaac and his sister are in their 50s. Over the years, Isaac and I have had special traditions with his parents, but the sister and her family managed to insert themselves until she eventually took over all decision-making. I have tried to explain to him how unfair it is that he hasn’t received equal treatment and consideration, but he wants to avoid conflict. In my opinion, this is happening because he and his sister were raised this way, and I find that so wrong. I’m at a point where I will likely refuse to go on another family vacation unless he is allowed to decide everything, as his sister has always done. But I know it will create stress.