Percy, Annabeth and Grover find themselves in Las Vegas and decide to check out the Lotus Casino. Based on "Percy Jackson and the Olympians: The Lightning Thief" by Rick Riordan.
The Lotus Casino sequence was filmed at The Westin Bayshore in Vancouver in June 2009, and additional scenes of Percy, Grover and Annabeth driving to and from the casino were shot on the Las Vegas Strip and in front of the Fremont Street Experience.