i never heard of using the disney points toward the wedding. i know it can be used for rooms, park tickets, restaurants, souvenirs, ect. but i don't recall reading anything about using the points toward your wedding.
Umm, if you look at the fine print, you can't earn enough points ($$$) to make a dent in the wedding. I am sure that they will let you use points on various things, and I am sure they will let you charge stuff on the Visa...