I agree with Dunno. I am not a winter person.
As to the OP, this is the first time DD has not had a winter break from gym. When she was at the Y, there was always a week or two off, which is definitely tough with a high-energy kid. At her new gym, she had a regular practice schedule last week (with Friday being a "fun" day where they were supposed to "dress up" (red and/or green leos and shorts, holiday hair thingies, red/green nail polish, etc.) and each level performed the dance they had been working on in dance class. This week they had one fewer day of practice, but the practices were 4 hours instead of 3, so pretty much the same # of hours in the gym. And next week they start on Monday with their regular practice schedule again. I certainly wouldn't have hesitated to take her out if we had family activities planned, but mostly she was there while I was at work anyway, and she enjoyed being with her friends. So no complaints about not having a break!