We are staying on property in early July. We are purchasing the 3 day, 3 park special ticket and then purchasing an individual ticket for one day of Magic Kingdom at the very end of our trip. Will I mess up the ability to purchase Lightning Lane passes early by purchasing these kind of tickets? I believe that Lightning lanes can be purchased seven days from check-in date but I don't know if a gap in tickets matters. Also, we are only interested in purchasing Lightning Lane for our Magic Kingdom day.