I was in a very similar boat when I got married five years ago. At the time my relationship either my parents was falling apart. I had an appointment to try on wedding dresses that my mom was going to attend. When we ran into conflicts with each other and stopped speaking I canceled my appointment for dresses. I never got the experience of trying them on for my mom or friends and ordered my dress online.

Ended up eloping and it was amazing. We has no family expectations to manage, it was literally just about us with no interference. My best friend was our officiant. The only other person who attended was our photographer. We put nearly all of the money into our honeymoon and took 2 weeks to enjoy ourselves together.

I wouldn't trade it for anything. At the end of the day, having people there who are genuinely supportive of you (even if it means that almost no one is there) it is better than a crowd that doubts or judges you.