I'd be afraid that Apple would have a camera inside the box that snapped a picture and immediately uploaded it to Apple's HQ. If the box was opened before the 9th, then the contents would dissolve.
Pretty strong indications that Apple will finally be releasing the MacBook (as opposed to the recent MacBook Pros) on Tuesday, May 9th. The rumor has been bumped up from Page 2 to Page 1 on Macrumors after sources are confirming that Apple stores are receiving materials for a Tuesday product release that say "do not open until Tuesday, May 9th."
Who in their right mind working in an Apple store would get such a box and not have that dang thing ripped open in 30 seconds? I mean really.