Most places don't have much in the way of cover. Restaurants and theaters are... if you can believe this, built to be comfortable to draw patrons in, and not so comfortable that patrons stay too long.
Walls don't protect you from the out of control (or sometimes in control) car plowing through the wall or window
"enjoying your meal"
Sounds nice! Taking basic precautions and then relaxing enough to enjoy your meal and have a great conversation with your companion is a sound plan.
Remember, double tap the salad bar! and don't skimp on the broccoli! its like level III armor for your heart!