It's not "an easy walk" like Pinehurst #2, which is much flatter. It's a big course with some elevation change [not quite 100 feet top to bottom], there are a couple of long transitions between holes, and it's sandy underfoot.
But that shouldn't give anyone the impression that it's a very difficult walk when you've got a caddie handling your bag. You're probably not going to be ready to go around again, if you're not young and fit. But if you can't walk Pinehurst #10, you can't walk Pine Valley or Augusta, and I've never seen anyone here trying to scare people away from playing those.