From Keys Critters:
"Madison, it's on the way
Keep them as cool/cold as you can until you need to hand them out. Keeping them cool slows their metabolism down. Do not float them in an aquarium and warm them up.
Your FedEx tracking number: 797031772477
All dry packed inverts are acclimated to 1.025 @ 78F.
We pack and ship bulk inverts dry, snails and hermits. Before you receive your shipment have a container ready with "old" salt water (this can be out of your current system) that is adjusted to 1.025 @ 78F and well aerated. That is a measure of specific gravity and the measurement is temperature dependent.
Float the bags in this water for approx 15-20 min to adjust for temperature, then just open the bags, rinse in aged water, dispose of the rinse water, and release the inverts into the container. Please do not drip acclimate dry packed inverts.
Proceed with any other acclimation after that if your system is of a different specific gravity and temperature.
Most people run their invertebrate systems at 1.025/78F. If your system is already within that range, you just need to float for temp, give them a quick rinse, dispose of the rinse water, and immediately release.
Thank you
Keys Critters/Corrie"
I checked the tracking number and it left Marathon, Florida yesterday at 4:40 PM and was on a truck heading out for my office this morning at 6:47 AM