For a moment, I got nervous that I was going crazy. I spent a ton of time dealing with a flight after AIPAC trying to ensure I didn't miss Purim in Israel which I was certain was March 7-8.
And then I realized you were talking about Jerusalem
The city still functions. If you enter into larger religious neighborhoods or "party areas," (Mea Shearim, Ben Yehuda, Old City,) you will see more raucous celebrating.