The Big Bus Day Tour, also known as the Red Route, kicks off at stop #1 – the MGM Grand/Showcase Mall located at 3791 S Las Vegas Blvd. This is precisely at the west entrance of the tour lobby and at the south end of the Showcase Mall.
As for the Night Tour or the Green Route, it starts at stop #2 – the High Roller/LINQ Promenade at 3973 Linq lane where the bus loading zone is situated, departing promptly at 7:00pm.