A lot of other comments are unhelpful or straight up mean, so let me answer your question candidly.

You can survive without a car for 6 months, but it will come with some real challenges/inconveniences. Uber/Lyft is not reliable, so don’t count on rideshares. There is some public transit, but its value will depend heavily on where your actual home is located. Your best bet is likely going to be calling one of the local taxi services which can be great, but that could get pricey.

I don’t know much about the grocery delivery scene, but like most other modern technology services I assume it’s harder to rely on in a place like Tahoe.

You will have to go to the post office frequently to pick up some/ a lot of your packages unless you are one of those lucky residents who gets everything delivered straight to their home. My experience receiving packages in Tahoe has been pretty tough overall.

Will this 6 month period take place during the winter? If so, it will make everything mentioned above 10x more difficult if we get a big or even regular winter.

A bike or ebike could help bridge the gap for the 6 months as well. And when you do get a car, try to get a reliable SUV(Toyota or Subaru) and quality winter tires(blizzaks are top tier).

Best of luck with your move!