The kids in this ad are totally enthusiastic, but we'd be even more excited than these two kids if we walked into the living room and found Taiko no Tatsujin Wii and two drums. These imaginary parents (of the future, since the game comes out December 11) were able to just go to the store and purchase the game, whereas anyone hoping to elicit an "Ohhhh, Taiko da!" (It's Taiko!) from us would have to order an import copy of the game and surreptitiously install homebrew software on our Wii.
The point is, basically, that we are intensely jealous of these children and their adorable, Taiko-tolerating cat. The girl just twists the knife by declaring that it's "like an arcade." Oh, right, they have arcades too.