The whole “Pirate Code, or they’re just Guidelines” fits the Lightning Lanes to a “T”. For 2 days at 7:00am I tried for RotR. It started showing about 10:00, each next step it moved forward 3 hours until the payment screen was at 6:00pm when we had dinner reservations. I would try it again at 7:02 and it would say all sold out. Then I tried at 7:09 and got a 10:30
Lightning Lane +. The next day same thing, all sold out by 7:02, got an 11:45 entry at 7:12. You can’t plan easily, only spend money at Disney. At HS early entry for onsite guests would have to be on the bus to the parks to get in front of the crowds before you could use the Gene system.