Royal Caribbean has been on a torrid pace. It may be difficult to maintain.Following a mid-2022 fleet redeployment, Royal Caribbean (RCL -2.13%) has been a juggernaut among cruise line stocks, surging more than sevenfold over the past three years and more than doubling for the fiscal year ending Aug. 21.Undoubtedly, those are impressive data points, but the second-largest cruise operator by revenue could succumb to waning momentum over the near term as tough year-over-year comparisons and macroeconomic head ...