Yes. Put $14 in an envelope, label it "day #1 parking", and seal it. Then put another $14 in a second envelope, label it "day #2 parking", and seal it. And so on until you've "prepaid" for all your parking.
I personally don't like to do the Disney gc thing in case something catastrophic happens, and we need to cancel our vacation. Yes, we do have an emergency fund, but our vacation fund needs to be liquid as well (IMO) since it's not a necessity.