The ambitious target has been hit two years early, says the Los Angeles Tourism Convention Board.
The Abu Dhabi Corniche has event space for up to 2,000, while the Al Ain features a garden area for al fresco social gatherings.
Flybe shares nosedive again as investors discover they will not be able to vote on the deal.
New 133-room DoubleTree hotel features lake-front views, a ballroom for 700 delegates and four restaurants.
C&IT subscribers can read our report for corporate event planners, including stats, trends and industry insights.
The annual event with drinks and entertainment was held at the Institute of Directors and hosted by comedian Andy Parsons.
This year's forum featured inspirational talks, panel discussions and a gala dinner in the ballroom at The Langham hotel.