I don't know; I have mixed feelings about this one. On one hand, I feel like b/c it is a destination wedding, you should give people as much time as possible to be able to find & book travel. On the other hand, I feel like you may overwelm people if you send them out around the holidays; the holidays are enough stress on their own. As far as travel & finding a great deal, you just never know when something great might come up, so from that aspect, I would say the more time you give people to find a deal, the better. Hope that makes some sense; good luck!!!