The annual conference connects travel professionals from key destinations around the world.
The 1,000-room Marriott Marquis will open in summer 2016.
The Hilton property will feature 600 guest rooms.
The $200 million California property will open in 2017.
The company is looking at Los Angeles, New York and Miami.
Luxury hotel has nine meeting rooms and a ballroom.
The 253-room hotel has nine meeting and event spaces.