Not Orthodox, but do keep kosher, and do go to non-kosher restaurants.
Mr Neville and I order fish (if we can determine that it’s not a non-kosher fish like catfish) or vegetarian meals at restaurants. We often ask the waiter if the dish has chicken stock or any other meat products in it.
We wouldn’t order meat or poultry in a restaurant, even if we knew the dish had no dairy products in it, because we only eat kosher meat and poultry. Fish, vegetables, fruit, grains, and dairy products, however, don’t have to be kosher-certified to be kosher (at least to our standards- some people probably would disagree on at least some of those). We also drink non-kosher-certified wine.
We have very few problems finding things to eat in restaurants in the Bay Area, though come to think of it we don’t go to many restaurants that serve standard American fare. We will usually look at a menu before we go into a restaurant, if we can, to see how many choices we’d have if we went there, and if they sound good.