Retirement parties are all about the guest of honor, but the planning can get expensive fast. If you want a private room, you need to lock in your venue at least four months out to get the best off-peak rates.
You are looking at about $2400 for a quality event. Breaking that number down into smaller chunks now makes the night feel a lot lighter when the bill arrives.
Remember that 0% intro APR is a deadline, not a gift. If you still have a balance after your 15 months are up, the bank will start charging interest on whatever is left over.