We did. It was fun and all the advice I got from here was super helpful in knowing what to expect. We didn't get there quite as early as I originally intended but I needed a nap. We got there at 3 for a 6 start (90 minutes before the arrival cuttoff) and were 63 & 64 in line (of the confirmed tickets). We were the far left of center because they used us to fill a gap at the end of a row. We were in front of Penny's apartment where several scenes were shot (I don't consider that a spoiler -if anyone does, I apologize) and the stairwell.
Pizza was cold but we'd brought Chipotle to eat shortly before heading inside. They do let you take in beverages as long as they have a spill proof lid. Water bottles and sodas in plastic bottles from the vending machines, for example. I specifically asked before doing it.
Great experience. We flew out specifically to attend and probably won't do that again. But if we're planning a trip and will be in the area i'd go again.