I think you should take any opportunity to reduce stress on you on your wedding day. The wedding is for you and your partner and that’s all that will matter in the end.
People that are so selfish that they’d rather bicker and pick fights with other guests at the cost of everyone else’s enjoyment should definitely not be invited.
If you want, just explain to them why you felt you needed to make the decisions you did. Maybe they’ll care enough to listen and take a look at themselves, or maybe not.
It’s unfortunate that they still behave that way at that point in their lives, and I get it that we all have our own set of issues and that nobody is perfect. But, I really don’t think it’s worth risking it on your wedding day. Like I said, that day is for you two. Share it with the people who you can count on to experience that happiness with.