Vegas at any time of year sucks. My least favorite of all cities.

Off-season down-market venues are often chosen for cost. Though I'd expect you could find something far more attractive at that time of year (or some other) for similar costs. Vegas has scale, but that's also attainable elsewhere. The other amenity is a concentration of entertainment venues.

Seems to me there are plenty of other alternatives in Colorado, New Mexico, Arizona, or even Utah which would be more attractive.