You are welcome to come to the ceremony! All that we ask is that you don't receive communion unless you are Catholic and in good standing with the church (i.e. receiving it means that you are in full agreement with everything that the Catholic Church teaches).
Yes please bring your children!
Our ceremony will be in a Catholic Church so if you could refrain from wearing spaghetti straps dresses that would be awesome! Semi-formal wear is perfect. All little boys should be in suits (JK I just think its super cute when they are).