Yes, a first look at the departure performance shows that the RTOW on 07L/R would be reduced on most aircraft, (irrespective of the height of the exclusion zone.) but as the government says that the subject is "confidential" it is difficult to know.
On another thread that I posted this (in Private Flying) a reply reported that Paris has an exclusion zone that goes up to 5,000 ft so if that were applied to Hong Kong that includes everything on approach and departure to CLK.
What is worrying is the cavalier way an American commercial organisation has come into a foreign country and with the conivance of the local government bought our airspace for their own ends.
I appreciate that noise is a consideration for tourist ventures. So why don't they talk to the local operators about their requirements and our airspace? Under the current Air Navigation Order the 1500ft overfly restriction would have been enough to satisfy the most stringent noise requirements over what is in itself is a noisy, boistrous entertainment.
GFS needs to transit to south Lantau on casevac operations, will they be allowed to enter the Disney zone? Private flying at present uses that part of Lantau island - why should an exclusion zone of such magnitude be required when a 1500ft overflight height already in the legislation would cover any noise abatement problems?
Cultural imperialism or for the greater good of the people? You be the judge.