We are currently at Disneyland & kids are exhausted (of course). It's raining and I'd like to let them sleep in a little. BUT, sister is coming to join us for today only & won't arrive till noon. We want to get FP's to use this evening. Can only one of us actually go into the park & then use all 4 tix for FP's? Or, does each tix have to be scanned at the turnstile in order for FP to work? Anyone know? Thanks!