I would bet the $39 pass member fun card is the cheapest it's going to get.
No mention of single day tickets (as of yet). As they now have dynamic single day tickets for HOS (implying they were a success for Christmas Town last year), I'm guessing the single day dynamic pricing just hasn't been released.
No mention of single day tickets (as of yet). As they now have dynamic single day tickets for HOS (implying they were a success for Christmas Town last year), I'm guessing the single day dynamic pricing just hasn't been released.