What is the difference between a Good Elf ticket and a Late Elf ticket?

Actually, the only difference between a Good Elf ticket and a Late Elf ticket is the price. You can think of a Good Elf ticket as an early bird ticket. There is a limited number of these tickets available. Once this quota is reached, you can still purchase day tickets, but they will be categorized as Late Elf tickets. For the (slightly) later decision-makers!