My fiancé' family is trying to control our whole lives!

We just had a baby girl 3 months ago, so as to

make things easier on us we have decided to elope. Our plan was to elope on our 4 year anniversary in March, and then plan a large reception later on to celebrate with everybody.

Neither of us care about a huge wedding, and would much rather not spend the money on a ceremony. We would prefer to elope and then have a reception in a couple months with our families so we can all celebrate together.

I told my family and they were 100% supportive, my parents eloped so they understood the whole concept of it.

When we told his family they lost their minds. They went crazy and said "no, absolutely not! We are going to watch our son get married. We deserve to be there and you can't keep us away." I just think it's so rude that they can't respect the decision we made as a family. We are going to do something with the families to celebrate, but when we actually get married it was going to just be the two of us and our daughter. I don't think it's fair at all for them to expect us to give up what we want to satisfy what they want. Am I wrong for wanting to stick to our original plan? I don't think it is up to his parents to decide how we get married.