I've a lot of people say its best not to label the box as eggs. Just putting fragile on it seems to be better. Putting eggs on it seems to make the mailmen be rougher with the package. Thats just what I have heard and don't know for sure.
As far as a Saturday shipment. Unless it was possible for you to receive the eggs next day it doesn't hurt. All shipping trucks roll 7 days a week. Unless the delivery day falls on Sunday the package shouldn't be delayed at all. For example a priority mail package mailed on Saturday will usually still get delivered by Monday or Tuesday. Chicks or eggs will only set if they arrive at your post office on Sunday, any other time they are always in route to their destination.
As far as a Saturday shipment. Unless it was possible for you to receive the eggs next day it doesn't hurt. All shipping trucks roll 7 days a week. Unless the delivery day falls on Sunday the package shouldn't be delayed at all. For example a priority mail package mailed on Saturday will usually still get delivered by Monday or Tuesday. Chicks or eggs will only set if they arrive at your post office on Sunday, any other time they are always in route to their destination.