I would say at least an hour, conservatively. Although it depends if your kids want to do Wilderness Badges there (mine did) and meet Rafiki (mine did.) The most annoying and time consuming part to me was waiting for the train to take us back to main AK. I would guess we waited at least 20 minutes just for that. I think it just runs back and forth - if there was a schedule, I wasn't aware of it. My kids had a lot of fun though!