7 heads of leading cruise lines are set to discuss the industry's current trends & future direction at the State of the Industry session. The session is slated for Tuesday, March 12, at the 29th annual Cruise Shipping Miami conference also featuring Christine Duffy , president and CEO of Cruise Lines International Association, who will lead off with the State of the Industry address, and David Scowsill, president and CEO of the World Travel and Tourism Council, who will provide the keynote speech. Panelists at the 9:30 a.m. session include Adam Goldstein , president and CEO of Royal Caribbean International; Kevin Sheehan , chief executive officer of Norwegian Cruise Line…