I'm Catholic my husband is not. We also had two children prior to being married, that I did have baptised in the church. The church will require you to take their pre-marital classes. You take a test on your personal values and beliefs, then meet with the priest regularly to go through your answers (that's what we did). You do not have to convert, but you do have promise that you're children will be brought up catholic. There are small fee's to the priest. In our church we could not have weddings after 2pm on Saturdays because of mass. I'm not so sure about the modest attire, I had cleavage and a low cut back on my dress, no issues with this. There are rules about what can be placed around the alter I think.
Talk to the priest of the church you're considering - they can definitely provide you with more info.
at 2:27 PM on Jan. 4, 2010