Did your MBP come from Shenzhen, China originally? I believe the regular shipping path for iPads has been China to Hong Kong to Alaska, and then to a mainland distributing facility. Someone told me that FedEx doesn't deliver on Monday sometimes, although we'll see what happens. Tuesday was the original earliest date Apple said it would be delivered when I first placed my order, so if it comes Tuesday or Wednesday, Apple estimated well. Even though I've only waited 7 days so far, it feels like forever!
I also ordered a screen protector on 5/9 from eBay that's coming from California (it shipped on 5/11 by USPS), so that should almost certainly come tomorrow or Tuesday at the latest.
The MBP went from Shnghai-Anchorage-Memphis then by truck to me in Pensacola. It had a casing issue and they said it was DOA, so my replacement is in transit now--again with a delivery on a Thursday, and it has been sitting in Shanghai since the 14th with expedited shipping (and normal on the original order). Go figure!
My iPad is still waiting to ship (ordered the 10th)...hope to see an update soon!