I have eggs in the bator now. They were all shipped from several different breeders. I put them in egg cartons (pointed ends down) in our guest bedroom. Several times a day I moved a small pillow from under one end of the egg carton to the other (to gently turn the eggs). I kept the first eggs in that bedroom for about ten days while I waited for the other eggs to arrive I set all the eggs at the same time. So far, after candling, it looks a good percentage of those first eggs are growing. So I think you can probably keep them for up to 10 days in a cool place - and turn them regularly - without losing a lot of viability.