Yes, there are.
Renting a vacation home directly from the owner can help you cut costs, gain more space or privacy, and live like a local. Plenty of vacation homes in the Las Vegas area are available for rent and -- thanks to the Internet, are easy to find.
A number of Web sites feature vacaction home rentals by owner: www.homeaway.com/Vacation-rentals/Nevada-vacation-rentals.htm, for example, lists 140 house rentals after sorting for four-plus bathrooms and 54 listings when you sort for Sleeps 13 or More.
One vacation home listed is located on two acres and features 9,000 square feet. The main house has eight bedrooms and 5.5 bathrooms; the casita has two bedrooms and one bathroom. There's a game room with a pool table and poker table and the back yard has a trampoline, huge pool with slide, and gazebo. It costs $1,500 per night or $7,750 per week; a week split ten ways comes to $110 per night per party.
You can't do much better than that, unless you rent a 6,500-square-foot house with eight bedrooms (including five kings) and seven bathrooms, plus a formal dining room, game room, and swimming pool, which goes for $700-$800 per night and $4,500 a week -- $65 a night per party.
Vacation Rental By Owner (www.vrbo.com/vacation-rentals/usa/nevada/las-vegas) is similar, and has a sorting function by bedroom that lists the most first. It has a 26-bedroom 32-bath "mini-castle" in Silverado Ranch, a half-mile from Las Vegas Blvd., that sleeps 60 starting at $4,800 per night. But there are also one 11-bedroom, two 10-bedroom, two nine-bedroom, and three eight-bedroom houses for rent for as little as $750 per night.
Vacation Rentals (www.vacationrentals.com/vacation-rentals/Las-Vegas-Nevada.html) has similar listings, including a 7,000-square-foot five-building six-bedroom eight-bath complex, with a pool, tennis and basketball courts, putting green, and a private movie theater. It goes for $5,500 for the week.
These are all excellent deals for the amenities and prices, especially for a group your size that all wants to stay together. These Web sites have most of the information you'll need to select a few, then it's one click to contact the owner of the property to begin the rental negotiations. An LVA staffer went this route and rented a small one-bedroom apartment in the Marais section of Paris for a couple of weeks a couple of years ago and felt like he got the best deal in Paris while he was there.