Club Penguin New EPF Message From Rookie

Today Club Penguin's EPF agent Rookie has released a new EPF Message for all agents to read! This is what he said:

I'm so excited for next week's Underwater Expedition! I guarantee it's going to be a party to remember!

What do you think Rookie means when he says "It's going to be a party to remember"? Comment and tell me ~Happyblue128