I used the TripAdvisor code this evening to purchase a 3-day WDW base ticket for early next year. My understanding of portals is quite limited, but I tried to do this through Topcashback for additional savings. It seems from prior postings here that Topcashback might say that the Target Circle code is 'unapproved' and thus the additional 9.09% or whatever it normally would be, will not happen. Even so, the code by itself provided a very excellent discount and I thank the OP for revealing this unusual path to discounted theme park tickets.