Oh, poor dear Cecilia! I will pray for you.
Sometimes when these complicated problems get posted I have noticed the first post can be “shallow”. Not so in this case. I agree with esieffe,
Marriage counseling is a perfect fit for this situation.
I know you have already tried it, and I have read some of your post before, dear Cecelia. I do not remember how the counseling for you in the past went but I know it can be discouraging and even make things worse with the wrong counselor. In fact that seems more common than not. But with it a whole year away, it looks like an opportunity for some intervention in this decision. Gregory Popcaks counselors can do it on the phone and would be likely to give good practical thoughtful Catholic advice with a problem-solving approach, in a timely manner.
esieffe also said:
If he changes his mind AND his heart, that might be enough, but based on your post, I imagine he might not.
I think he is a guy with some insight here. I agree, at least, it seems it is easier for your husband to get stuck and stay stuck in that kid-at-Christmas attitude, that childish “Its all about me!”, rather than think like a man who lays his life down for his wife.
*Geneses 2:24: "
Therefore shall a man leave his father and his mother, and shall cleave unto his wife…" *Also I think it means he needs to leave his brother and his buddies, and cleave unto his wife. Clearly he is not doing this and does not do this or you would have not said some of the very sad things you said, like,
If I say I’m uncomfortable with something, he will not stand up for me and suggest another activity. He doesn’t want to appear ‘uncool’ in front of his brother or friend.
Oh, boy. Wow.
. And the thing is, his friend and BIL both know how I feel about this activity.
But they take the cue from your husband that *you don’t matter? *So, even though they know how you feel, they ignore it, too? Why would you want to share your tenth anniversary with these guys?
I feel like I’m invisible to him probably 95% of the time, why do I need to spend my time and good money (with an audience no less), to only magnify this fact? This is probably, bottom line, how I feel about the whole thing. Call me selfish
Sounds sensible to me. It sounds like your coming along is so he can enjoy* their* company,* not yours. *But if he doesn’t invite you on your anniversary, then he looks like a bad guy. He can bring you along, ignore you, yuk it up and drink with his buddies, and tell you “Later” and he knows he doesn’t have to keep his word. After all, he took you along on his buddy binge! Sounds like that is what you said. Am I right?
Sadly, it sounds like he might even be glad for an excuse to not have to celebrate your anniversary.

Hope I’m wrong.
Doing the right thing is not being selfish. If he is not living his vows, then it is wrong, and *you work against his greater good *to co-dependently support his behavior. In marraige you are supposed to help each other to Heaven. Supporting his wrong actions is not helping him get to Heaven. You cannot make him do the right thing if he doesn’t want to, but you don’t have to help him do the wrong things. I would say the truth (if this is the truth for you):
“I don’t want to go on a buddy trip for our anniversary. I don’t want to get drunk or be anywhere near drunks. I want to celebrate our marriage. You and me. If you don’t want to celebrate our marraige with me or put aside your buddies for me then I am very very sorry. I can’t make you. It makes me sad. But you have to choose.”
Don’t expect the truth to be enthusiastically received all the time. Lots of times the truth hurts. But it plants a seed. It might take root.
However, you are better off hearing a solution like this from a Popcak counselor, not me! They will have the best solution to this dilemma, and a* real Catholic* perspective. But your going on this buddy-trip – I don’t see how any counselor would recommend that.