No worries
EPCOT Center was a huge park. Very spacious, and like nothing that had come before it. The large open areas and lavish landscaping alone were amazing for the 80s. But this was the plan. A calming, open and almost parkland setting. The plan was deliberately not to have buildings built up against each other. And with enough walking and "neutral" areas between each to allow guests to digest what they had just seen before moving onto the next epic attraction.
The walkways were deliberately wide and uncluttered to avoid any crushing as seen in the castle parks, confusion about directions, and to promote a calm and unrushed visit.
Also remember it was two parks melded into one, both with as much space as planned when they were separate entities.