Serenade of the Seas (2003-built,last refurbishedin2022) is the third of the Radiance-classRoyal Caribbean cruise ships- together withBrilliance OTS,Jewel OTSandRadiance OTS. Note: CruiseMapper's Serenade OTS deck plans are valid for 2023-2024-2025 (through March 9th). Serenade of the Seas cr...