This is true due to the fact that there are plenty of government events taking place in dubai and abu dhabi. I live in abu dhabi and have been a resident of the UAE for over 30 years.
My observation is that when they have conventions and government forums, they seem to be very disorganized and hold them all at the same time.
Hotel owners and managers have formed a body to communicate to the government that they cannot cope with all the various gov bodies back to back and mostly parralel events that leave many scrambling and hotels at 100% occupancy levels.
This is even true at times such as now when the global economy is in a slump, the mideast and parts of asia have reported the largest growth rates. See the IMF and world bank to get specific numbers.
The other element and factor that adds more fuel to the fire is that many europeans see this part of the workd very cheap to holiday in especially at this time of the year due to climate conditions that are very favourable against summer blaze months.
Hope I have helped