i had submitted a question on this board a few weeks before we went to disney. my husband needed a ECV do to heart problems. i was told that if we leave MK during the day, we might not get one when we return for more evening fun. when DH turned his in at noon, they gave him a card and said it was his for the day and would be there for him when he returned later that day. i just wanted to clarify that for anyone that will need to rent one when they go to MK.