Yes, you can absolutely wear a baby carrier (like an Ergobaby, Manduca, or a wrap) throughout Disney World, and many parents find it much easier than navigating a stroller through thick crowds. For attractions, the policy depends on the specific ride's safety restraints. On "slow" rides without height requirements (like it's a small world, The Haunted Mansion, or Pirates of the Caribbean), you are generally allowed to keep the baby in the carrier as long as the safety bar can close properly. However, for some attractions like Mickey & Minnie’s Runaway Railway, Cast Members may ask you to remove the baby from the carrier and hold them on your lap for safety reasons. It is always best to ask the Cast Member at the entrance of the queue. Outside of rides, babywearing is a "pro-tip" for waiting in long lines where strollers are not permitted. Disney's Baby Care Centers in each park also provide a quiet, air-conditioned space if you need to take a break from the carrier to adjust or feed your little one.