Hi,
I was surprised how easy it was to deal with the double stroller. We used one for our daughter. It seems like the doors and aisles in the shops are extra wide.
Few things to keep in mind. All of the doubles, except MGM, do not have a divider for the seats. Also, all strollers can look alike. Sometimes, CMs move them to clear a path or for access after a show ends. Try to mark your stroller with a ribbon or something. Keep your receipt. If you change parks during a day, you can get a stroller at each park without an extra cost. At the end of the day, turn in the receipt to get a Disney Dollar.
-Chuck