At the EBs near me there's not really much promotional stuff at any times. They had an xbox kiosk set up forever but that's all they ever had.
Soft Etc seemed to be very pro-Nintendo. (At least the one I go to in Manhattan is.) Most of the people in there are buying GameCube products. Last time I was in some guy bought 8 wavebirds. The one I go to in Queens pushed GameCube to the rear of their store with PS2 and Xbox up front. My friend likes to laugh at this.
Game Express has a single tv with all the consoles hooked up to it which the two guys behind the counter play. Last time in there one of them declared its been comfirmed Rare's bringing Conker to Xbox and PD0 to Ps2. Very pushy to try to have you buy a WaveBird.
CompUSA had a PS2 kiosk (think I broke it accidently), an Xbox one, and a GameCube one. But for some reason the GameCube kiosk after 15 min is up Mario's voice says "Thank you for playing Nintendo 64".
I went into another store recently (forget the name) where up front they had a GameCube kiosk with ED, RE, TS2, and something else. ED is not really a game to be played in a store. Started it and left it for a while and when I came back was still in the opening cut-scene. Also were pushing the Platium GBA.
Will probably go to one of these places and try out Mario and SFA.