We have purchased tickets for four consecutive days, but we can only use them on the first two days. Do they check ID when the tickets are used, or can we give them to another family member to use on the 3rd and 4th days?
They will more than likely do a finger scan or check ID against signatures on the tickets. As far as I know, tickets are non-transferrable so you probably couldn't give them to anyone else to use.
They had us sign the back of our passes on our first day. A couple times after that, they had us write our signature when we were entering and compared it to the signature on the ticket.