I was always afraid to try the restaurants that weren't "meat and potatoes" with my husband. If the description of the dish is more than five words long, he turns up his nose.
But then I started talking to him about exactly what he didn't like about certain things. For example, a place would have a steak which he does like but he didn't want to order it. Why? Because it had a demi-glaze or something on it and it was served with seasonal vegetables. Or that it was served with mashed potatoes which he positively hates. I explained to him that he could easily have the steak prepared without the sauce and he could choose from any other side that appeared anywhere else on the menu. So the seasonal vegetables could be rice. The mashed potatoes could be a baked potato or, depending on the restaurant, fries.
Then I had him look at the appetizers. Were there any on there that he could eat? Usually there was at least one. He could have that for his dinner with a salad and be happy. But the salad was listed as raspberry vinegarette. I told him he could ask what else was available.
It was just a couple of meals at restaurants with a fall back of a burger on the menu but now the man doesn't care where we go to eat. He knows he can work with the server and make substitutions to get the meal he wants. And at Boma? All it took was one vegetarian friend to start describing what she was eating and he was up there stuffing his face with all kinds of things.
He's been so successful at Disney World that he now goes to our local restaurants and makes substitutions all the time.