I hope you don't cancel your 25th Anniversary trip to Tahoe. We've been visiting there that many years each winter and twice as many years each summer. It's the most beautiful place to enjoy Mother Nature.
For our winter trip we fly into Reno, NV airport and the drive to Incline Village in LT is only 45 min where we stay at the Hyatt. We've never rented chains, as they are not allowed, plus Reno has on hand the type of SUV's you will need to get over the mountain as most people flying there go to Ski. If there was a bad storm the road will be closed until they clear it so you won't be stranded. In all the years we've traveled we never had a problem, even if it is snowing, driving from Reno.
Where are you coming from in CA? Do you have your lodging reservations made?
All I can add is don't give up going to Tahoe, it will be worth it. We are city people from Los Angeles and only drive in the snow a couple times a year.
Edited: 5:30 am, January 16, 2013