Nowadays, invitations often carry a "regretsonly" notation at the end. That means that the host will count on your being there unless you tell him or her otherwise.
The only people who fear death are those with regrets.
只有充满遗憾的人才惧怕死亡。
3
Your life only lasts for a few decades, so be sure that you don't leave any regrets. Laugh or cry as you like, and it‘s meaningless to oppress yourself.