Effective today Disney will be strictly enforcing the FastPass+ terms of usage to make the system fairer for everyone.
What should be of note to guests is the rule regarding FastPass+ reservations only being made on tickets used for admission into the park will be enforced.
According to the official Disneyworld.com website, the rule is:
The valid theme park admission associated with your Site/App account and used to make FastPass+ selections must be the same valid theme park admission that you will use for entry into the park on the day the FastPass+ selections are redeemed.
FastPass+ selections made on tickets not used for theme park admission that same day, the My Disney Experience app may be temporarily locked, and the app will prompt guests to speak to guest relations or call the My Disney Experience Support Center.
Continued attempts to make FastPass+ reservations with tickets not used for admission that day may result in permanent loss of access to FastPass+.
You can read the full FastPass+ terms and conditions here.
The enforcing of this rule results from the abuse of FastPass+ has becoming more widespread. Visitors have been using friends tickets, expired tickets, and other methods to obtain more than the allowed amount of FastPass+ allocation per day.