If you purchase your disneyland admission in advance they come with (I believe) a $10 ESPN Zone game card. It gets you $10 worth of game play in the ESPN Arcade room.
The ESPN part is good only for the game room and does not expire, once you redeem them for cards. You can add to the $$ on the card, but you cannot combine all money from separate cards onto one card.
I am not sure if this would fall under a "gift card" or not but I do know in California that Gift Cards are not allowed to expire even if the card says it does.