The paths in AK were themed in a way that makes them somewhat bumpy. They were designed to have imprints of leaves, small stones, etc, in the walkways to make them look more like paths in Africa, Asia, etc.
Some people find the theming to be bumpy enough to notice. Other people don't notice at all. I imagine it might make a difference what type of seat, tires and shocks you have. Someone with hard rubber tires and a sling seat on a wheelchair might notice it more than someone with airfilled tires and a padded seat.