I used to love Olive Garden and while I hate giving low ratings that aren't authentically deserved always, I do really care about the well being of people with celiac or just gluten intolerance.
I have gone here for a few family things since being gluten free, and I'm also pescatarian and have dairy allergies as well. So I could have salad but I don't know as far as cross contamination the total safety of it. Definitely wouldn't be one of my recommendations.