Iván palachuk, as Jack Frost explains, you can earn an hour if you stay at a Disney hotel. In case you don't, you can always use FastPass so you can save time and long lines. I recommend that you look for the available times for the FastPass of the attraction you want to visit a few days in advance (regularly two) and reserve them.
They open at 8 am. But if you are in a Disney hotel they give you an extra "magic" hour and you can enter at 7 am on certain days. (They open @ 8 am, but if you stay at a Disney Resort, you get an extra magical hour and can come in @ 7am on select days.)
If they let you go to the parking lot, you will line up and at 8 you will enter
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