Because of service issues on my last visit to DW, I received 2 complementary 1 day park hopper tickets. However, since my upcoming visit will be for a week, the 1 day tickets are not much use. Do you know if I could just upgrade these to 6 day base tickets (essentially getting about $100 off the cost of the 6 day ticket). Has anyone every does this with "free" tickets from Disney? What else would I do with 1 day tickets since I always go for many days (and the price difference between buying a 5 day and 6 day ticket is minimial)?