Very cool for GameStop to provide this for their customers.
On the overall topic of Wii U pre-orders, this means nothing without numbers. All PS3 systems at GameStop and EB Games sold out within a single day. And we know what happened shortly after launch.
Even if someone finds numbers on the approximate number of Wii U systems that were available for pre-order, what really matters is how the Wii U can perform right when it comes out of the gate.