Mt. Olympus Camp Resort│Stay and Play Free!- Water & Theme Park Tickets Included every day of your Stay for Free. Over 1,500 lounge chairs, cabana rentals, 1 million gallon wave pool, 11 water slides and 2 adventure rivers. The Great Pool of Delphi - newly completed in 2016 is a massive water park expansion that will not disappoint. Hades: longest underground coaster; Poseidon's Rage: largest man made 9' wave; 42 water slides, 7 go-kart tracks, and 5 rollercoasters; championship golf in the summer; skiing / snowboarding in the winter. Free with Stay only at Mt. Olympus! So What are you waiting for Stay & Play Free!