Imagine everyone actually showing up on time, the kids running around the grass, and the big grill smoking away in the background. Pulling off a great family reunion picnic starts months before you slice the watermelon. You need to reserve that city park shelter six months early, or you will end up celebrating in someone's backyard.
We are looking at about $550 for the whole setup once you factor in the permit, food, and supplies. Because this is a hard deadline purchase, lead-time is your real lever for keeping things manageable.
Remember that the intro window is a strict deadline, not free money, and if any of that balance is still there when the 18 months are up, standard interest will kick in fast.