I think at this time we've reached a tipping point. The economy is good, so things like Disney Parks attendance should be up. The fact it is not tells me people don't see the value in going at this time. Whether that is international and a byproduct of our politics and the increasing strength of the dollar, or domestic and a function of where the economic strength is located, or a function of ticket prices, the answer is most likely all of the above. I do not doubt international travel is down. There are plenty of studies that are starting to be born out from NYC to LA. I also see a lot of economic strength at the bottom of our economy, less in the middle and top. So you can't pass a fast food restaurant that doesn't have a "help wanted" sign, but you can pass a lot of companies that are still cutting management to keep profits up. With employment strength at the bottom, there is little help for $100+ a day park tickets.
Disney needs to do a comprehensive overhaul of their ticket and room strategy, and it needs to come quickly if they want to stem the bad news. There aren't enough upcharges and price hikes that can make up for a drop in room occupancy and dropping attendance. Rich people don't go to the same vacation every year. Disney every few years to see what's new? Yes. But Curacao, luxury cruises, and especially luxury European trips look nice now that the dollar is strengthening.
Of course the flip side is that Disney has a lot opening in 2019. If you are like me, and go every few years, why book now and 2018? If you hold off until the end of 2019 or early 2020, you are likely to have major new attractions in 3 of the 4 parks. 2018 simply looks like a loser year.