We have two reservations with APH currently, One for Sapphire and one for Royal Pacific (we may be canceling Sapphire, even though we LOVE staying there!!!! We like express passes a bit more!). We are traveling with 2 adults and 2 teens (Both 17). Is it 18 and older to be considered an adult at these properties? And do they ever check? I want to make sure I have them with me at check in to show their I.D./Drivers licenses in that case because we have proof- I just need to know how to prepare and check in. They'd love to just be at the parks and stay there and have my husband and I go check in to the room when we can- At check in, do they get their own key cards? Does everyone need to be present at time of check in? Or, can my husband and I do it and the rest of them stay at the park? And do they say "child" on the key card, or are they all the same? Not that it really matters...I'm just curious.