Feeding thirty of your favorite people the night before your wedding usually runs around $2,200. The trick is timing: you need to lock down the space four to six months out, but final headcount and payments do not hit until right before the event.
If you want to keep cash in your bank account a bit longer, you can use a card like the Discover it® Cash Back to break the bill into predictable monthly chunks.
A 0% interest window is a payoff deadline, not free money. If you carry a balance past the 15 months, the standard interest rate applies to whatever is left, which makes remaining debt expensive fast.