My parents want to join us for one day when we are visiting US/IOA. We have four full days so taking it slow one day won't bother us. My parents have limited stamina so which park has the least amount of walking? We will be staying at the HRH so I know they can easily go back to the hotel if they want. They really like to be with our kids at the parks but last year we took them to the Magic Kingdom and the walking was waaaay too much. (I still don't think they have fully recovered).