Came here for the Queen concert in late June (phenomenal concert btw, but that's a side note). We had floor seats, so the entrance process was a little bit different from other stadiums I've been to, and felt a bit more "underground", which meant I didn't really get to experience anything the stadium had to offer - concessions etc.
Entering was pretty easy though, again, I believe this was somewhat due to our phenomenal seats, and there wasn't really a line or anything. I think I was in my seat within 10 minutes of being dropped off by the limo.
Layout of the stadium seemed decent and I believe even those way up high had a decent view and sound.