I would add, based on my experience with my current t, who ive been with for like ten years, that if your t offers availability THIS vacation, there might be a reason for it, like t is taking into consideration where you are in your t work, and his plans for his vacation. These circumstances might not be the same when the next holiday season rolls around. Thats no reflection on you or t. If you need it, use it. If you have any questions about it before t leaves, ASK!!!