I found a great site if you're looking for food in Vegas but aren't sure what kinds of restaurants are there (We're trying to plan our Vegas wedding from within Canada, haha):
U.S. Menu Guide: Las Vegas Restaurants
USMenuGuide.com is actually great for lots of major US cities -- if you go to their main page, just USMenuGuide you can choose other cities to browse.
Basically it's a site that links you to various restaurants in that major city, but you can search and filter your searches by type of restaurant, by neighbourhood, by casino or hotel, and then by the restaurant's features... such as whether or not they have private rooms, outdoor seating, buffets, brunches, micro brews, etc. etc. etc. Then when you choose to browse a restaurant via the site, there's all kinds of pertinent information along the left menu of the page, such as what kinds of payment methods they accept, whether they have a dress code (and what it is, if that applies), their ambiance, their features, whether or not they take reservations, hours, parking info if necessary, etc. It's great! You can usually also browse their menu from the site (or they link you to the restaurant's official website) and/or see their party/special occasion menus, too. It's been a huge help for us!
Good luck! We're leaving for Vegas in less than a week now, can't wait!