Yeah, unfortunately there isn't really a lot to do in Tahoe during those months unless you ski or gamble. It isn't like Vegas where you can go from show to show and be entertained all week, but you might catch one or two shows worth seeing. And when I say shows, you'd be lucky if it is something as exciting as the guy from Staind playing solo (he plays there all the fucking time it seems).
Or whorehouses, but I'm guessing the little lady won't be up for that.
I've been in Sacramento for over 25 years, so if there was something exciting to do 2 hours away I'd have done it by now, but every Tahoe trip during the winter usually involves skiing, drinking, and sitting around by the fire and relishing the fact that I'm not at work. Boring, I know, but there ain't shit else around there unless you drive to Reno, and then you're still going to wonder what to do.