Live rock from Texas?

The guy who sold me the rock was local, so the "shipping" consisted of an hour long drive back to Seattle from Puyallup. I transported the rock in buckets w/water from their tank (the buckets were 1/2 full) and wet paper towels on the exposed rock. Should I still expect some die off? There are a couple dozen "cup" corals on the rocks that seem to be doing okay...they look kinda like this:
http://www.tampabaysaltwater.com/thepackage/id_images/db_1_cupcoral_-dsp_large.jpg

 

Yeah, some die off will happen, but if it has corals on it i guess you could drip acclimate it before throwing it in to help the corals and it could even prevent die off!
Evan.