My comments were specific to that site.I agree with ericb that anything that can be done to request an amenable environment for helicopters would be good - maybe a list of desirable / undesirable features (flat ceilings with few obstructions, at least 16' x 16' area per flight, ability to launch 2 non-interfering flights at the same time using multiple areas or a larger area) , and examples of locations that have worked well in the past. The use of the racquetball courts this year was a relief after seeing some of the states working in gyms with unforgiving ceilings.
I know the event staff will do their best to get a good place for helicopters. I was just making sure they remember how horrible that ceiling was. Because the event staff changes from year to year and the ones that remember may not be the ones negotiating the site this time.