Kezzie, so glad to hear that most of your peeps arrived OK!
MM does what they can to get your chicks out safely and then it's up to the USPS. I live in NH and got my chicks in on Monday Feb 23rd. The postage label said that it was shipped Friday the 20th which surprised me since they said it would be a Saturday hatch, I thought maybe they just made the labels ahead of time and they really did ship on Saturday, but who knows. I had just 1 DOA and lost one weak one the next day. The remaining 26 are happy and healthy at 2.5 weeks now. It was fairly cold that weekend during the day and very cold at night, and there was a big snow storm Sunday afternoon through Monday too so I went out of my mind from early Sunday until they arrived Monday morning thinking that the chicks didn't have a chance with the storm slowing things down and the cold weather! I have heard though that some postal routes are better with chicks than others. There are two facilities in MA that process the chicks coming to my area of NH. I've heard from a few people, that have gotten chicks many times, and have learned that if they go through one postal routing system they are good but if they go through the other, that station leaves them in the truck overnight and most arrive DOA.