On the WDW website, under the “Things you need to know” page, it specifically says the following:
“Before traveling to Florida, please make sure that you have reviewed any advisories or restrictions that may be in place for travel to Florida. Visit https://floridahealthcovid19.gov/travelers/ for information. Guests who are under isolation or quarantine orders must not enter Walt Disney World Resort.”
Given they will have your home address, they could therefore refuse to allow you to check in if there are restrictions still in place.
On the same page it also says
“ Persons who are experiencing symptoms of COVID-19, have been in contact with someone with confirmed or suspected COVID-19 symptoms without completing a 14-day quarantine, or are under quarantine orders must not enter Walt Disney World Resort.
Walt Disney World Resort Guests may be subject to additional screenings. Before you leave home, please check the temperatures of everyone in your party—including yourself—as an extra layer of precaution.”
I know there was discussion over whether the quarantine was being enforced. Thought this would be useful.
I’ll highlight it in my pinned re-opening thread.