If you are a fan of Pawn Stars, you should visit the shop. It is cool to see the place that you see on TV and some of the items that have been on the show. You can also buy some Pawn Stars souvenirs if you are so inclined.
I have been to the shop maybe 10 times and never seen anyone from the show. Clearly they are actors now, and not really pawn brokers anymore.
This last time some of the guys were actually at the shop for filing, but didn't come out in public. Instead they closed the shop and asked 50+ people to leave so they could so their filing. They asked just a handful of people to say as "extras."
I get how it works, and I still like the show. However, we had a totally different experience at Rick's Restorations, where the people from the show are actually there working and will talk to you. I would think the Pawn Star guys could be a little more accommodating.
If you see a long line to get in -- just come back another time. It is often busy, but there are plenty of times when you can walk right in.
There is no charge for admission, and the souvenir merchandise is not outrageously expensive.