Now it is below zero and I am worried about it freezing if I am away when it arrives. Has anyone else had any issues with this? Also - how long do you have to get a Finer Wine kit started once it arrives? And, how should a Finer Wine kit be stored until it is started?
You can look through this thread for detailed answers, after all, there are only 61 pages.
However, I'll summarize from memory, and hopefully relay everything correctly.
Being frozen on your doorstep is not an issue. FWK are frozen or kept extremely cold at LabelPeelers, prior to shipment. My kits in November arrived partially frozen, with the overall must temperature in the lower 50's F. After reconstituting with ~65 F water, the temperature rose to the upper 50's, and was in the low to mid 60's by the following day.
The kit that arrived in August was perceptively cold to the touch, although I did not think to check temperature. After reconstitution with room temperature water (~72F), the must was 66.8 F.
The directions say to immediately refrigerate or freeze, or to start the wine. I think refrigeration is suggested as 1 week max, but IIRC, some folks have kept it longer. You can take the concentrate bag out of the box to better fit a refrigerator or freezer.
Your best choice is to start the kit immediately, as it eliminates all problems that could develop with storage.
Regarding delivery, LP will work with you on delivery dates. Keep in mind they are at the mercy of the delivery service, which in my case is FedEx. In each case FedEx said a 3 day delivery, but the kits arrived in 2 days. I WFH so it wasn't a problem, but for people who travel, I suggest scheduling for at least 2 days at home or have someone who can open the box and put the concentrate in your fridge.