The Princess Medallion App now allows one to indicate if they are Vegan.
In the Princess Medallion App go to:
My Preferences
then
Dining
1st page will be "Share Your Allergens" click on Save button at bottom of the page.
2nd page of Dining will be "Diet "page
Select there "Vegan" and click on "Next" button. On the following page click on the Save button.