I ordered 5 crystal black shrimp and 5 yellow neos. The yellow neos must have gone out of stock in between ordering and packaging but I was refunded for them. Aquarium creation notified me via email every step of the way for the shipping and includes a USPS tracking number.
The shrimps survived the journey just fine. They come in a plastic bag part way filled with water and some mesh in there for them to maneuver through. The bag itself is packed in a box with soft insulating foam such that, despite the actual box being pretty banged up from the mailing process, they all survived. As another user mentioned, I got 6 instead of 5, which I appreciated. You also get a small sample of food (just a couple pellets).
As I acclimated them, they looked happy and healthy. After floating the bag to come to temperature, I gradually added a few milliliters of tank water into their bag. After a good length of time doing this, I finally cut a slit in their plastic bag and let them jump into their tank on their own volition. One by one, I watched them jump down into their new home (I bribed them by putting some food just below the bag).
I have only had them a few days, but have been able to count at least 4 at a time as recently as last night. I presume they are all alive as my tank has many hiding spots and the ones I find are happily grazing. As a first time shrimp owner, they are much smaller than I expected! Some times they are hard to find.
Overall, I am very satisfied with aquarium creation. If I choose to get more I will certainly come back to try and get some of those yellow neos once they are in stock.