Concede, tell your wife you’ll need to take additional hunting time to make up for. Still putting her first.
Maximize the negotiation leverage:
You: "Can you believe those 2 lovestruck dunderheads instantly planned their wedding on the exact weekend of the hunt I've been planning with my boys for almost a year?"
Wife: "I doubt that was their main concern. You know how impulsive they are."
Y: "That's why we have calendars. I planned ahead, the fact they didn't puts me in a major bind. Bubba and Shooter are counting on me for this hunt. I don't want to be selfish and screw them over."
W: "But they aren't family."
Y: "The hunting brotherhood is a a bond forged in blood. Its anniversary is celebrated every autumn by millions of brothers and sisters of the hunt. We don't gather for Festivus, the Solstice or any of the Hallmark card holidays. To everything there is a season. Summer is for weddings. We convene our hunts only in the fall, in order to spend the rest of the seasons with our nonhunting families."
W: "You sound like your mind is made up, no matter how I feel about it. The newlyweds will be crushed if you miss their wedding. I'll just have to go without you. So selfish!"
Y: "If it is that vital to you, I will try to explain to the boys why I have to spoil their hunt, just this once. They will be devastated, they aren't the most understanding people. I mean, men don't take betrayals like this lightly. I'm sure I'll have to make promises for several future fall hunts. Hopefully they will not banish me from the tribe. I've heard of it happening for lesser offenses."
W: "You mean you'll change your plan and come with me to the wedding?"
Y: "Reluctantly, yes. And only because you are so understanding about me hunting every fall in the future."
W: "Baby, you're my hero. Thank you so much, I can't begin to tell you how grateful I am. I'll just have to show you. And here's a thought, maybe my brother can go hunting with you guys next year."
Y: "Great idea, honey. Oh, you know that will be his anniversary, I'm sure he'd hate to miss it."