By Daniel Kline An ideal scenario happened for Caesars, MGM, Penn National, and other Sin City sportsbooks. The Super Bowl marked Las Vegas’s official return to normal. It was the first major event held in the city since Nevada dropped its indoor mask mandate. That removed a major barrier for people wanting to visit the city famous for excess, not for carefully managing a pandemic. That led to a huge weekend for Caesars (CZR) – Get Caesars Entertainment Inc Report, MGM Resorts (MGM) – Get MGM Resorts International Report, Penn National Gaming (PENN) – Get Penn National Gaming, Inc. Report, and…