Ask a host in Tahoe if they can provide a free limo. They are a little more flexible than some places. If not, I believe there is a regular shuttle you can purchase space on. The Tahoe vip desk should be able to provide info. Drive time is 1 to 1 1/2 hrs unless there is snow.
Reno Tahoe transport
Google “South Tahoe Airporter.” There’s about 10 buses each way a day. Round trip is like $30.