I prepped several pounds of carne asada and al pastor only for everyone to cancel

Prepped some tacos for the Canelo fight tonight and everyone canceled. Anyways, more for me and my fiancée.

So that this thread isn’t just me feeling sorry for myself, I’m wondering what rule of thumb you all use to estimate how much to prepare for guests for a taquiza? I always feel like I prep too much.

Entonces, ¡Viva Mexico Cabrones!