The weeks around the Fourth of July Celebration are some of the busiest of the year at Walt Disney World. Crowd levels usually rise to a 10 out of 10, and at the Magic Kingdom the gate will frequently reach capacity. When a park reaches capacity guests are no longer able to enter, and even having a coveted dining reservation won't get you in. If you plan on spending your Fourth of July Holiday at the Magic Kingdom, be sure to get there early and stay throughout the duration.