For dinner, we had appetizers of baba ghanoush (delightfully smoky), hommus, artichoke hearts and sautéed mushrooms (ask for them to cook in oil instead of butter). For entrees, we had the vegetarian spaghetti and the falafel sandwich.
In terms of differences from Byblos, we found the Beirut pita bread to be fluffier and instead of a falafel salad (available at Byblos), the Beirut offers a falafel sandwich, which was delicious. There may be other differences between menus. But in general, the food is delicious, the atmosphere is very pleasant and for vegans, you can get a great meal.