Another reason is that a wagon would pose a safety concern for other guests who are navigating through the Parks and a stroller is much easier to navigate with (especially since it is in front of you and you are pushing it versus pulling a large object behind you that guests could trip over or walk into).

Disneyland and Walt Disney World prohibit wagons and "stroller wagons" (like the popular Keenz or WonderFold models) primarily to improve guest flow and reduce congestion in the theme parks. These vehicles are significantly larger and bulkier than standard strollers, making them difficult to navigate through narrow walkways, crowded shops, and attraction queues. Because wagons are often "pulled" from behind, the person operating them cannot easily see if they are clipping the heels of other guests or blocking a path, creating a safety hazard in high-traffic areas. Disney implemented a strict size limit of 31 inches (79 cm) wide and 52 inches (132 cm) long for all strollers to ensure they fit within the park's infrastructure. While some stroller wagons might meet the size dimensions, the "wagon" style itself remains banned to prevent guests from bringing in "novelty" carriages or "mini-floats" that take up excessive space. The only exception is for guests with a documented medical necessity, where a wagon can be tagged as a "stroller as a wheelchair" at Guest Relations, but for general use, they are strictly prohibited to ensure a smoother experience for all visitors.