No, they do not. That sort of thing is saved for the world championships.
And if you make it to Hawaii, make sure your parents are in line for the shop 2 hours before it opens, or you will be stuck with a sticker. People stand in line for hours just for the world championship merch!
Hats, shirts, towels, bags, DS/DSi skins, figures, pokedolls - tons of stuff. All gone hours before opening.

