Boyfriend's Family Holidays

My boyfriend and I have been together 7 years and I'm still finding myself dreading going to his family's for holidays. His family is very quiet and doesn't talk very much so it basically becomes us watching TV together for 4+ hours. Which I get it, people bond in different ways and this is just the way his family spends time together. But after 2 hours or so I'm done. I hate just sitting there and time moves so slow. I try to make conversation but it's usually pretty short. I especially hate it when it takes time away from my family, I hate thinking I'm sitting there quietly watching TV when I could be laughing and joking with my family. But it's important to my boyfriend that I be there... Idk how to stop dreading it and just embrace it..