I have 3 Park hopper passes from 1991 each with 2 remaing days on. We will be there in sept/oct as a party of 5. Should I buy 4 new park hoppers and let one person use up the outstanding days on the old tickets or should I part exchange the old passes for new ones. The tickets were originally bought at the gate for 111 dollars each. They are valid for three parks as AK was not open then.