I got a 4x surge around 10:15pm at Harrah's. The Paxs initially wanted to go to the Metropolitan Club and when we arrived, it was closed. As a result, they asked to be taken back to their hotel on Decatur. Oddly though, I got a stacked ping one block away (after only driving 10 minutes) and there was no surge on that fare. It seems suspect to me because I saw it was very red in the Quarter (4x+ throughout the whole FQ) for about 10-15 minutes and then 10 minutes later the surge evaporated. I would expect at least a 1.5x surge. But my fare review shows no surge on that Pax.