Who is the 40-year-old ad exec and why does he join the bachelor party?

He joins the wild bachelor party for two main reasons:

1. His advertising career is faltering—his ideas are being dismissed as out of touch with younger generations.
2. He’s accidentally included in a group chat with a bachelor party crew of twentysomethings and decides to crash the weekend as a way to reconnect with youth culture, both for his work and to try to stay relevant.