Unless you can get a Gov't, teacher, or nurse discount at Swan/Dolphin. Also, check to see if you are going during value season. At times, there may be discount codes available on mousesavers.com I am unsure how those work as we get the Gov't rate from Swan/Dolphin.
Also, once you sign up for mousesavers newsletter you can click on the link and get discounted park tickets from undercovertourist.com or ticketmania.com
My advice is to stay on site... being able to use Disney's transportations and the extra magic hour is worth it.