<human>: Hey, Reddit. Maybe you can help me. My best friend is having a destination wedding and I do not want to go.

We live in the Northeast U.S. We have been best friends for over ten years. We have worked together at the same jobs, picked up the same hobbies and for a long time I considered him closer to me than my actual family.

However, as we got older things became more complicated. He found a gf. We slowly started drifting apart. I understand that is how life goes sometimes. However, his girlfriend, now fiance, dislikes me greatly. It  has created a lot of tension between us. I am not a fan of her at all, but it is not my life, and my friend chose to marry her. I respect that and treat her with the respect she is due. 

Basically, they want to get married in Mexico at an 'All Inclusive Resort' on the beach. Cool, more power to them. Here is where we run into problems. I only have two weeks of vacation a year, and limited money (STUDENT LOANS!!). My girlfriend is foreign (Brazil) and we already had plans to see Brazil and meet her extended family for two weeks. This wedding will throw a wrench in these plans, as I will have to use a week of vacation on this wedding. Also, he is not asking me to be his best man because his fiance does not want me in the wedding party. The fact he did not make me best man or at least an usher just makes me feel so awful.  

Basically, I feel hurt that I am not his best man and feel insulted that he still invited me. I would rather not go to the wedding and head to Brazil and meet my future in-laws. Is this selfish? Am I in the wrong? 

I don't want to drop $2,000 + to watch people get married on the beach and feel like an outsider.

Condense the text into a few key points
<bot>: Best friend having destination wedding. I had tentative vacation plans and would rather do those. Not in wedding party and incredibly hurt. Am I wrong to sit this one out?