There are NOT limited vegetarian options at
Disneyland Resort. On the contrary, there are almost an equal number at this point.
For the Food and Wine festival, specifically, the entire menu at Paradise Garden Grill is going to be plant based. That's an.entire counter service location. Even outside of the festival, this location has pretty much turned into a plant based eatery.
And every dining location has at least one vegetarian option on the menu, and not just salads either. There is tofu and impossible meat everywhere. Do some browsing of the menus at all dining locations and you will see every menu has a "plant based" section.