I think the risk Disney is can they keep the parks fresh and interesting enough, with sufficient quality of experience, to keep people coming back as well as attracting those who have never gone before. People will expect value for money spent, and an an enjoyable experience. Poor maintenance, overcrowding, lack of new attractions could all result in drop off at some point, but for now, they are at sufficiently high demand with high prices. The mistake is assuming it will always be this way if they do nothing. Watching the series on
Disney+ about imagineering and the development of the parks all over the world really emphasized a vision and culture that I'm not sure has been adequately maintained. And the lack of theming to current movies is also a risk. Sorry, does any child under 10 know who Peter Pan is?