How Long Will Live Rock Keep?

[mark]

thought they shipped the around the world wrapped in newspaper, placed in a plastic bag then boxed

[gregzz4]

Just keep it in sealed containers to retain moisture, and in a warmish area so it doesn't get cold (or hot)
If it were me, and it was sitting for days, I'd open the containers daily to exchange fresh air but I'm a bit anal (aren't most reefers?)

[RDNanoGuy]

It will be fine. Live rock can lie dormant for months and still be good. The initial tank cycle will just take a little longer.

[Myka]

I would suggest waiting until you have a day when you can buy the rock and get it into your tank in the same day. I also strongly suggest buying rock from a fresh shipment that had been at your LFS for less than 2 days.