If your wife won't let you dedicate three hours a week twenty times a year then it is time to discuss the bigger problems as this is just a symptom.
In 2000 I almost got married. My girlfriend was dicsussing with her friend when we should get married. (we were in California). I wasn't part of the conversation. When she told me what they had decided (mid October) I calmly said, well I don't know we will have to wait and see once the Packer schedule comes out as it might be a home game in which case I would be back in Wisconsin.
Yes, an intense "discussion" ensued.
Now, every relationship I have ever entered has included this conversation;
Tripp: I am really easy going and I can enjoy doing pretty much anything with you....even shopping. However, come August to January, I will devote time to watch the packers. Every game. Not some games...not most games...EVERY game. It is non negotiable, same as is monogamy. I don't have to watch all the other games...but will watch a few here and there. You ok with that?
Her: Umm yeah.
Tripp: Good, also, I have season tickets to Packer games. It is not an event but rather a religious pilgrimage to football's holy land, the mecca. For this reason, I am particular on who I bring. If you do not know who Vince Lombardi was and can't discuss the packer sweep in detail or why Rodgers checked down...then you won't be attending with me. Understand?
Her: Ummm yeah, but can't you teach me while watching the games?
Tripp: been nice knowing you. Good luck in your future relationships..