There are many questions surrounding the debut of the ‘Budweiser Made in America’ music festival, which will take place in downtown Los Angeles’ Grand Park this Labor Day weekend.

The concert, created by rap mogul Shawn Carter, a.k.a. Jay Z. Up to 50,000 people are expected to attend Saturday and Sunday to see acts including Kanye West, Imagine Dragons and John Mayer.

If promoters get that many people, it would be the park’s biggest crowd in history, and also a test of all that goes with it, including parking, traffic flow and crowd control. There are also concerns that the availability of beer at the venue could cause problems.

Still, the event has not sold out. Some note that though ‘Made in America’ festival has done well in Philadelphia, the Southern California live music scene is much more spoiled.

Gary Bongiovanni, chief executive of the concert tracking firm Pollstar said:

The big question is going to be the site and how people like going down to the park. The thing in Philadelphia is a really unique idea, and it sounded like a totally unique experience for the locals. Los Angeles is a very busy market, and in many ways the fans in L.A. are spoiled with the number of options they have. They have their work cut out to establish themselves.