By Dole Whip I presume you mean the Pineapple Float....correct? It is, after all, the single greatest invention in theme park dessert history.
It's tough for a place like Mythos, or Brown Derby or Prime Time, in a tournament like this because the voting skews toward the individual, popular snacks, rather than items that make up a larger sit-down dining experience.
That said, I think Casey's Hot Dog over the Banana Chocolate Cake is the worst decision in the tournament to date, rivaling Toad over Tatsu in the Best Ride tournament for clunker of the year. Just my $.02.