Hey everyone

I don't know if any one remembers the issues my FI and I were having with our weddding ceremony. Just in case you don't, to sum it up basically FI's parents said they wouldn't come to our wedding if we didn't have male, Christian officiant. The officiant we wanted was female and was not identified as having any particular faith. FI and his parents talked it over and then came to the conclusion that they just wanted us to be happy so we could do what we wanted and they would be there.
After all of that craziness, I thought that we had finished with issues dealing with religion. Well, about a month ago my dad said in addition to our outdoor ceremony.. he would like us to also be married at a church. He said he wanted us to be allowed to enter heaven or something like that... Instead of arguing with him, we just agreed to it because it would make him really happy. In reality I really don't want to have two ceremonies and especially one that is in a church because churches make me uncomfortable. But FI and I are okay with it because it makes everyone happy.
I was literally done discussing religion until apparently until last night when my dad starting talking about our church ceremony. He said it was important because it is a certain right to Catholicism and then we will be able to have our children be Baptized, go through Communion and Confirmation and all that. We don't want our children to do all of that!! I don't know what to do now...
Is there a way to tell them somehow that we will not be doing that without
everyone freaking out? My FI and I are Agnostic, if you were or are Agnostic, would you have your children Baptized? Are you baptizing your children?