Yellowstone in January

[Knutte]

I'm travelling to Yellowstone next month, wasn't originally for photography but of course I'm bringing my gear. As you're very limited to move around Old Faithful area I'm looking at this 1 day trip:
http://www.yellowstonenationalparklodges.com/things-to-do/winter-things-to-do/winter-activities-at-snow-lodge/winter-photo-safari/

Anybody done it or know anyone done it? Is it worth it? I'm very tempted to do it as it specifically caters to photographers. My dates are set so if there's a photography workshop I'm very limited on what I can attend. I've been there before but not in winter time.