we just purchased a 2016, 29UR and we use the ladder from the Driver overhead Queen Drop down bunk, sounds like your unit has the storage instead of the bunk.
We just came back from our first trip over the Holidays, we live in Vermont and we went to Orlando FL. to visit the kids. 3,215 miles round trip, we were blessed with no big isses only minor items like a loose microwave mount, that squeaked to no end while driving. we will take to the dealer in the spring we came home to Vermont to 8 inches of snow and -5 degrees, Hope you enjoy your trip and all goes well for you.