That's an awesome price for a 120qt. It's nice if you have the room to store and carry it but the smaller ones work just as well.
Vac packed will work and keep the water out of the bags. I would get 2 of those cheap styro coolers and use them together, make sure you keep it out of the sun or covered with a blanket and sprinkle salt on the ice when you replace the ice. I would also punch a drain hole in the cooler to let the melted ice/water out, that's what melts ice faster than just ice.
Good Luck on the trip!
Vac packed will work and keep the water out of the bags. I would get 2 of those cheap styro coolers and use them together, make sure you keep it out of the sun or covered with a blanket and sprinkle salt on the ice when you replace the ice. I would also punch a drain hole in the cooler to let the melted ice/water out, that's what melts ice faster than just ice.
Good Luck on the trip!