Family travel can be immensely rewarding, giving you new ways of seeing the world through smaller pairs of eyes. That said, Vegas is hardly an ideal place to bring the kids. For one thing, they're not allowed in casinos at all. Because most hotels are laid out so that you frequently have to walk through their casinos to get to where you are going, you can see how this becomes a headache.
Note also that the Strip is often peppered with people distributing fliers and other information about decidedly adult entertainment options in the city. Sex is everywhere. Just walking down the Strip might give your kids an eyeful of items that you might prefer they avoid. (They don't call it "Sin City" for nothing!)
On top of everything else, there is a curfew law in Vegas: Kids younger than 18 are not permitted on the Strip without a parent after 9pm on weekends and holidays. In the rest of the county, minors can't be out without parents after 10pm on school nights and midnight on the weekends.
Although still an option at most smaller chain hotels and motels, the major casino-hotels on the Strip offer no discount for children staying in your room, so you may have to pay an additional fee ($10-$40 per person per night) to have them bunk with you. You'll definitely want to book a place with a pool. Some hotels also have enormous video arcades and other diversions.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.