Every time I have ever pre-ordered anything online (though Lowe's, Sears, Walmart, Walgreen's, etc...), I receive a message along with the order confirmation/receipt that an email will be sent to me once the order is ready. That message is listed when the receipt pops up on the screen after ordering, and again when a copy of the receipt is emailed to me. The two hour time frame is an estimate. Most of the time, my orders are ready sooner than that, but I have also had an order take several hours to complete. It would be a good idea to either wait for the "order ready" email or call to check the status of the order before heading up to the store. It will save you time and aggravation next time around.