By Daniel Kline The cruise line has followed Carnival which made a similar move while Royal Caribbean hasn’t (exactly) followed. Every business these days faces sharply rising costs. Those costs are especially challenging for companies that are heavily exposed to the global labor market. These include the cruise lines, which must feed people and pay for fuel to operate their ships. Even as fuel prices drop, Royal Caribbean (RCL) – Get Royal Caribbean Group Report, Carnival Cruise Line (CCL) – Get Carnival Corporation Report, Norwegian Cruise Line (NCLH) – Get Norwegian Cruise Line Holdings Ltd…