Picture the gym doors opening, the bass dropping, and everyone actually recognizing the playlist. Pulling off a high school reunion takes a solid lead-time, and locking down your entertainment six months out is the real lever that keeps things from falling apart.
Good DJs book up fast, and waiting until the last minute usually means overpaying for someone who plays top-40 garbage. We want you to secure the date early so you can focus on the venue and the open bar without scrambling.
That 0% intro window is a hard deadline, not free money, and if any of the balance is still sitting there when the 15 months run out, you will get hit with interest on the whole amount.