Trip versus wedding

Hi everyone, I need some advice.

Long story short, my fiancé will be a groomsmen in one of his best friends weddings. His friend will also be his best man in our upcoming wedding too. They have not sent out save the dates or invites and the wedding is in three months. I didn’t know the date but was chatting about it with my fiancé when I realized I had a trip the same month. Surprise! The wedding is during this trip.

We changed my fiancé’s flight quickly to where he will be able to attend the wedding. We have even talked about potentially him not going on the trip at all to make the rehearsal dinner and wedding more easily. I am completely fine with this and he feels comfortable with it too.
The question I have is: should I cancel myself participating in this trip? I am not too close to this couple, and wouldn’t mind missing at all. But this is not a once in a lifetime trip so I am very conflicted about canceling or going.