Congratulations!!
I envy you. I prepaid on a trip we took during the holidays. Now, I'm leaving this weekend for a weeklong stay with my mom. I wasn't able to prepay on it though. Well, I did, but it's on my credit card....0% interest for 12 months so that's great. But, still, I would have rather had it paid in full before leaving. You really enjoy yourself more when you know it's paid off.
Have a magical trip!