Haunted mansion was the first experience of fear I can actually remember. I don't think the entrance will do enough to back away kids. From experience with multiple little siblings, what stops kids from going on rides is if it's a rollercoaster or not. When little kids see splash mountain or Dudley, their instinct reaction is "NOPE" because of the gigantic drop placed right in front of them. Even though those rides are colorful and thematically kid friendly, the ride itself is daunting to them. I think little kids will see the jeep slowly ride into the big temple walls and think "that's not too bad". Maybe because of past experiences with Kilimanjaro safaris or some other slow moving jeep ride. Parents will most likely convince any skeptical kids by showing them the car and saying "look it's not too bad, just a car ride". The facade would usually do the trick however you see the ride vehicle so it's different from let's say haunted mansion and more like splash. If the peer pressure works, the queue will do the trick. That's how I see it