Just a bit of friendly advice--double check the terms of your card. Lots of banks will alter how they allocate your payments if you take a 0% promotion--they reserve the right to allocate your payment to the lowest interest balance first. So, if you charge a $1000 trip, and another $500 of airfare on your Disney Visa, and then make a $300 payment, your payment will go toward reducing the $1000 balance at 0% instead of the $500 at 15% so the rest of things you've charged are all sitting out there accruing interest for as long as possible.
You may want to consider only using the card for the vacation purchase and doing the rest of your spending on another card, otherwise you'll wind up paying a pretty penny in extra interest!