Royal Caribbean (NYSE:RCL) shares are trading lower after the company cut its 2012 EPS forecast.Royal Caribbean now sees 2012 EPS $1.80-$2.10, vs. it’s prior guidance of $1.90-$2.30, and estimates of $2.15.RCL said it was seeing effects of Costa Concordia tragedy waning and it didn’t expect L-T impact.The company sees 2012 net yields up 1%-4% reported, up 2%-5% constant- currency.However, on the bright side it says Q4 bookings for 2012 and 2013 sailings remain strong.