they wont, they wont let you choose a shipping method either. I was told that extra bedding would be added, and it was noted on the order AND that the males would be marked.... NONE of the above!
The way I deal with hatcheries like that is I never do business with them again and warn others not to. I realize some of these problems arise from idiots working for USPS, but hatcheries can take extra precautions too. Ideal gave me disastrous genetics in the past. Never again.