Hi Jessi,
The MPC is a 6 weeks course. 3 weeks will be held at SJI and the other 3 weeks at a presenting couple's (they are like your team leaders) home. Topics shared include the differences between men and women, communication, natural family planning, .... (the rest I can only tell you when I'm finished).
Don't worry too much. The course will not only help you learn more about yourself, your hubby but also will give you more insight to his religion.
Whether the church wedding is "longer" or "shorter" depends on whether it is a full mass or just a service. If it's on a Sunday, it is definitely a service cos you cannot have the mass. Other days, it depends on both your preference as well as the priest's recommendations/preference.