Apple is now sending reminders to people who opted for in-store pickup of pre-ordered iPads. The e-mails, which began going out Wednesday morning, mention that iPads will be "ready and waiting" for customers between 9AM and 3PM local time on April 3rd. After the 3PM deadline, Apple warns, iPads will no longer be held, and instead become available on "first-come, first served basis while supplies last."
