The Little White wedding chapel in Kissimmee does weddings to suit all tastes and price ranges from the "kiss me quick package" at $100 to "a wedding of a lifetime" at $950 including limousine, champagne and red carpet. See www.whitechapelweddings.com. Another wedding chapel is the Victorian wedding chapel in Downtown Kissimmee at http://www.flwedusa.com offering a package with wedding cake, champagne and photographs for $695. This looks like a really pretty venue.
My own personal favourite ( if my daughter ever gets married) would be Cypress Gardens. Their ceremonies start at around the $1000 mark. There is a link from their web site. Or if you feel lucky with the weather and risk getting married outside in a garden setting, Bok Tower does a package for $250. See http://www.boktower.org/overview/weddings.html