It was a big night for actor Mark Wahlberg and his brother, Chef Paul Wahlberg.

Not only did they open their second "Wahlberger" location inside Mandalay Bay, they also received a huge gift from the county, the Key to the Las Vegas Strip.

During the event, Paul was curious and asked Commissioner Michael Naft what the Key actually does.

Naft jokingly claims it opens the back of every slot machine in town.