With each subsequent addition to its Oasis class of ships, Royal Caribbean has broken its own record for creating the largest cruise ship in the world. Symphony of the Seas was no exception when it debuted in 2018, only to be usurped by 2021’s Wonder of the Seas. These Oasis-class siblings’ reign as largest came to an end in early 2024 with the launch of Icon of the Seas, which will likely be topped by 2025’s Star of the Seas. Nevertheless, Symphony of the Seas is a massive megaship and every inch of it is packed with fun and entertaining things to do. Here’s our take.