Disney has always used IP as their main marketing tool for their parks. It's one of the reasons people who haven't been or only went as small children assume the parks are entirely just cutesy kid-only offerings and a constant onslaught of the Disney company branding. If you ask the average person to describe a Disney Parks commercial, they will likely say something like "a small kid hugging a character", "teacups", "Dumbo".
But the thing is, for the vast majority of WDW's existence, that presumption people had was false. Walt Disney World was NOT, in fact, a vacation destination where you were constantly bombarded with the Disney brand. In fact, years ago you could spend a week at WDW and have the majority of your time devoid of Disney IP branding if you really wanted to without even limiting yourself much.
The idea that being at Disney Parks and Resorts must equal a constant onslaught of Disney IP branding is entirely modern and has transitioned to this over the course of Iger's run as CEO.