My husband and I love to take the family to Maggiano's when we're in Las Vegas. The food is amazing but be sure to bring your appetite! It's family style so it's obviously huge but the portions here seem to be exceptionally large - even for family style. The stuffed mushroom appetizer, the caesar salads and the linguine/clams in red sauce are my recommendations. The service at this restaurant is amazing, as well. My drink was never empty, they timed each course perfectly so that I was never with too little or too much food at my table and my leftovers were whisked away and returned in cute little brown packages before I had time to even notice they were gone. Great experience!
The restaurant is, also, on a great part of the strip so you can walk off all the food you just ate while taking in the sights.