Introverted + People Pleasing Mess

We are still in the early stages of guest list making, and our venue holds 100 comfortably. I can barely think of 25 people. Of those 25, I know half of them wont come because travel (IN > ME) and most have, or are currently expecting. Ive been a HUGE introvert my entire life and was largely a loner in school, so I dont have that BFF ride or die squad so many other ladies have. (If you have them, cherish them.) Towards the end of high school I was still a loner, but VERY confident, which helped but not really since the girls I wanted to be friends with and I ended up intimidated by each other. I feel like this is still the trend. Adult friendships are outrageously difficult to start, and because of this I literally have one friend. Every other attempt in adult friendships is making plans we both know arent gonna happen, "Ill text you," and then nothing. Lather rinse repeat. Work pals are not an option since theyre all decently older than me and we dont really click outside our business personalities. My father died a long time ago, and over time that extended family stopped talking to me, and I have been taken off the family tree according to some cousins. My dads friends also forget he had three daughters, not two. My paternal grandpa is in early dementia and doesnt know who I am. I know this is going to bother FFIL since he seems to put a lot of worth on the giving away part of the ceremony. I dont want anyone to do it if my grandpa cant.


My FH on the other hand is crazy opposite. He has like four ride or die groups of friends and a whole family that knows who he is, complete with long time family friends! One of his groomsmen said something a while back that idk how to let go of: "if someone doesnt have a lot of friends that means theres something wrong with them and theres a reason no one wants to hang around them." I dont think he knows my social standing. Maybe there is something wrong with me?
Now, for the first time in a long time, Im scared of what people are gonna think of me when 80% of attendance is "his side" and I dont really have anyone. My own grandma isnt coming because she doesnt want to travel just in case one of her dogs suddenly dies. Im even planning on inviting my college roommate, whom I dont really talk to; we're just supportive of each other on social media. (Bad idea? Flow charts from pinterest say yes but Im desperate.) I just dont want those who do show up to feel out of place.
Im also scared some of his other friends are going to try to "fix me" like theyve joked about in the past. Are brides just not allowed to be introverted people? Its not like Im gonna hide/ recharge my social battery all night. Its my wedding and I would really love to have some fun. I also dont want to get sloppy hammered so my extroverted drunk side comes out and stays out.
Btw worth noting: the reason the wedding is in maine is because that is his home state and where we are moving to this summer to eventually start our family.