My fiancé's parents are divorced and have remarried, so there are four sides of his family while I only talk to my mom's side. We want a small wedding - less than 100 people - and have created a guest list of close friends and family that totaled to about 88 people. Recently both sides of my FH's families have said they want to invite an additional 8 people (so 16 total). My FH and I have been together for almost 2 years and I have never met these people, who are all aunts, uncles, and first cousins.
We are getting Married on a Friday so even if we added these 16 people to our guest list, we are pretty sure we would still be under 100. However, I don't want a bunch of people at my wedding that I don't know. I don't want to look out into the crowd and see the faces of strangers, I want to see the people I love and who I know care about me and support my marriage. I'm not inviting people from my side who I'm not close to, even some who have met my fiancé. I don't think my wedding should be viewed as a family reunion and I don't feel right about inviting people who don't know the person their nephew/cousin (aka, me) is marrying.
I will say that my fiancé's mother and step-father are financially contributing to our wedding including paying for our honeymoon.
Am I being selfish for not wanting to invite these people to my wedding? Should I invite them since my FMIL is financially helping us? If not, how do I tell my future in-laws that they're brothers/sisters/nephews/nieces are not invited?
Any advice is appreciated! Thank you!