When is the slowest time of the year? Do you get extended time off?
How much time do you get off for the holiday season? Christmas? A couple days? A week? Are other times of the year less busy, and thus, can you take off a few days off? If so, what time of the year is that? Is Labor day (weekend) particularly slow?
Assuming these answers are highly dependant on the level of the position you hold, I would love it if you could share your job title too.