I have about 6 keys from when my husband and I have gone each year and I think that I might have some unused park hoppers on there. I bought a magic my way package for Dec 26-30 and now I'm wondering if I have some days left on my park hoppers, can I refund my tickets I bought for this trip and get a credit on my card? Can I cancel those tickets now and then just buy them later if I need to? What are my options so I can save some money on this trip??