To take it one step further, don't just check the menu: call the restaurant and tell them what party you will be coming with (company lunch from X Inc and the date) and ask if they have or can make something off the menu.

When reserving, your team may have had the foresight to ask, and the restaurant may have been secretly accommodating. That has been my experience.

To take it one step further, don't just check the menu: call the restaurant and tell them what party you will be coming with (company lunch from X Inc and the date) and ask if they have or can make something off the menu.

When reserving, your team may have had the foresight to ask, and the restaurant may have been secretly accommodating. You'll also be able to suss out what kind of options they might be able to offer by speaking to them.

That has been my experience.