I just wanted to post information about a pre-cana class that my priest approved for us to take as an alternative to your typical weekend class and meeting with priest.  
www.catholicmarriagepreponline.com  We used it because I am in NH, FI is in NC, and we are getting married in Florida.  Lots of Army couples use this website, its based in Colorado but is approved in lots of dioceses.  The work is a lot , but it was very convient for us.  They allow you 3 months to complete the course, and you are assigned a sponsor couple.  I would highly recommend it!