Let me start this off by saying that marijuana has not been allowed at Walt Disney World in the past, but apparently for the last few weeks, it has may have been.
You see, the list of prohibited items allowed into Walt Disney World Resort has always included illegal drugs. However, in the state of Florida, medical marijuana is no longer an illegal drug as of Election Day 2016. With this new legislature in place, Disney World will be adding “medical and recreational marijuana” to the list of prohibited items for all of their theme parks, likely sometime in the next few days. Recreational use is obviously still illegal, but Disney will be including that in the listing, regardless.
We could not confirm if the use of prescription marijuana will be restricted at resorts or other non-theme park areas though. Hopefully Disney will clarify this in the coming days.