I also have two of the return tickets for Test Track, back door passes, anytime, no expiration date, which I was given when DW and I opend Epcot last year. I have never used them, maybe this trip I may give it try. I didn't use them prior because the line was not long, and we walked right on, no since in using them when the line was short. I'll take them with me in only 10 days...