No, Disney is not closed on Christmas Day. While some parts of the park may be closed, such as certain rides or attractions, the park remains open for visitors. However, it's important to note that the park will likely have a reduced operating schedule and some attractions may have limited availability. Additionally, some stores and restaurants may be closed or have limited hours. It's always a good idea to check the park's website or call ahead to confirm the park's hours and what attractions and services are available before visiting.