Exterior facade. Royal Caribbean Miami Cruise Terminal, Miami, United States. Architect: Broadway Malyan Limited, 2019. (Photo by: View Pictures/Hufton+Crow/Universal Images Group via Getty Images)View Pictures/Universal Images Group via Getty ImagesRoyal Caribbean (RCL) shares have decreased by 16.1% over the course of 21 trading days. This recent downturn is indicative of renewed apprehensions regarding Royal Caribbean's revenue shortfall and a cautious sales forecast amid a broader weakness within the se ...