Heroes of Olympus - The Vacation

After what felt like an eternity, they're finally finished with saving the world. It's only fair that they get a break. Right? Percy, Annabeth, Frank, Hazel, Jason, Piper, Leo, Calypso, Nico, Will, Reyna, Thalia, Grover, and Juniper. Yes, that's right. 12 demigods, a satyr, and a dryad going on the same vacation trip...