A company's stock price is complicated, and you can't necessarily use it to draw inferences all the time. Especially in terms of how it will affect you directly. Remember, the market price of a share of common stock is just determined by the supply and demand curve and what brokers could expect to get when they unload the stock onto other brokers -- in theory, this should work out to equal the net present value of the company's future stream of dividends if held in perpetuity.
If a company's stock tumbles, it could mean that the company is in trouble -- or it could just mean that previously investors were too optimistic about the stock, and now its scaling back to reality some. A fallacy that investors always make is assuming that the company "is in great shape" or "they trust it" based on publicly available information, and thus the stock is a great buy. The reality is that all of that information would already be accounting for in the price of the stock. If do, the stock should preform as expect and go up as an average stock would. If false, the stock will lose value.
As long as the parks are making money, and/or helping the parent company through cross marketing opportunities, the parks aren't going anyway... Now the biggest concern might be political risk, with DeSantis intent on making life harder for WDW.