They do. I was just reading about this on the Disney website the other day. I belive it is for the up to 8 guests. I believe I followed the links to look at the wedding pavillion.
Disney does allow wedding vow renewals as part of its Fairy Tale Weddings program. Click here to go to official FTW website. You can have one at Disneyland, or one at Disney World, or one on the Disney Cruise Line. My husband and I almost planned ours for this year but think we'll more likely do it next year. Our venue of choice will be the Wedding Pavillion at Walt Disney World. *Sigh*
Don't forget that the Dis (this website!) has a board devoted to Disney Weddings & Honeymoons: click here to go to it.