We always take steaks for one meal. We used to double wrap in Saran wrap then put in Ziplocks with all the air removed. I now have one of the vacuum sealers which works better, but either is fine. Freeze them about 2 or 3 days prior to the trip to ensure they are solid. We take a styrofoam cooler for the road trip up with dry ice. (I had a plastic cooler warp from the extreme cold of the dry ice) When we pack the food pack the morning of our departure, we put the frozen steaks towards the middle of any other food that you may want to keep cold. e.g. squeeze butter, cheese, bacon, etc. and pack wahtever remaining dry ice there is in with that. We usually have the steaks on the second or third night and have actually had to leave them out in the open for several hours to thaw. Yep. They stay frozen that long. Good luck and Bon Apetit!

Cheers,

q_v