We just went to the kiosk at the Boardwalk. They are all over WDW. We told the rep. we had time then and we went right over to SSR Preview Center. It was very easy. Good Luck
It is very easy to schedule through a kiosk. When we toured in 1992, we went to a kiosk at EPCOT, and said it would be most convenient for us if they would pick us up at our resort first thing in the morning, they did, no problem.