I've attended a few music (jazz) festivals held in recent years where everyone is assembled on the grass field, with the stage positioned on one end of the field.
I live literally three miles from the Rose Bowl, the worlds most beautiful natural grass field stadium, best place in the world to see a football game Although this will be a first for me seeing a major mega-concert there, sitting in the grand-stands. In this case it was the wishes of U2 (and their representing management) that requested "Credit Card Entry" only, as they wanted, as much as, possible that their fans were not over-priced on ticket cost's. Apparently, this ticket purchase method is implemented per the performing artist(s) request (as I was told by a TicketMaster representative). This way TicketMaster is able to somewhat control scalpers and brokers from manipulating ticket sales- driving up ticket prices. Ticketmaster will not provide a "hard ticket", so a ticket purchaser can NOT, for example, Purchase 04-quan tickets, then hand-deliver two tickets to other friends or clients who plan to attend and meet-up/sit-together at the concert. the ticket purchaser (owner of the credit card) is the assigned "owner" of all tickets purchased each guest of the ticket owner must enter the venue with the owner together the owner must display the actual credit card (and ID) at the entry gate as proof of purchase. It's interesting the new method that the ticket vendor (TicketMaster) are using to "deliver" concert tickets- they are pretty much forcing ticket buyers to use "Credit Card Entry" tickets- ie.
I noticed as well the number of un-sold seats remaining (even for the first night). Click to expand.funny, I purchased tickets for the 2nd show after it was added (I was disappointed when the 1rst day sold-out).