I had to ask!

Passing this restaurant and it seemed to be begging me to ask a question. But what question to ask?

What kind of party is going on tonight?
Is everyone OK?
Have you sent for the priest?
What exactly have you done with all the customers?
How big must your electricity bill be?
What time is take off?
Welcome to earth, what's your name?
Who is this bloke Pizza, and will he know the answer?

Just as I was plucking up the courage to throw one out there, PC plod walked around the corner.
"Hello hello hello, what's going on here then!?", he asked me.

See, my mum was right, always ask a policeman, he'll always know the answer.