Find out which cruise line -- Carnival or Royal Caribbean -- might offer better returns as the industry continues its robust recovery.As the cruise industry navigates its way back to full strength, Carnival Corp. (CCL 0.59%) and Royal Caribbean Cruises (RCL -0.49%) continue charting their courses as giants on the seas. Both have shown remarkable resilience and strategic acumen over time, especially with pandemic recovery. Carnival's superior cost management and exceptional financial recovery seem to give it ...