Since he already goes on 2-3 hunts (3-4 weeks) every year with just his friends it really seems more than fair for her to want to go on these big trips to these amazing places that she wants to share with him. It's not like she's trying to get rid of his time with his friends- he has a month every year he does that.
But if these are big trips that he can only take once in a life time and if it's somewhere she wants to go t00, this would be a fair compromise. If he wants to do ALL these things with just his friends, perhaps he should stay single. Marriage is about a partnership and I personally wouldn't want to sit home alone for not only a month every year, but also another few weeks while he goes to these incredible places that she wants to see as well (and if it's a once in a lifetime trip if she can't go with him, she misses out completely).
I think she's more than fair.