Cruise stocks are surging nearly across the board today after Norwegian Cruise Line (NYSE:NCLH) lifted its full-year earnings outlook on strong demand. Only Royal Caribbean is in the green for the year, up 23% on record seasonal bookings earlier in the year. Despite the weakness of cruise stocks, there seems to be plenty of interest in tourism lately, as evident from cruise lines' record bookings. Whether that brings a reversal in cruise stocks, however, remains to be seen. On the date of publication, Shrey ...