Check the individual hotel casino's websites. Lots of "unadvertised" rates or bonus promos...usually emailed to those on their players club lists. Anyway, I recommend the New York New York Hotel and Casino or the Stratosphere over Circus Circus. I've never been there, but for family friends who ended up there for "family reasons" they said it was a complete hole. Period.

Stratosphere is not the nicest of hotels and is a little far from the rest of the hotels, BUT rooms are decent and recently "remodeled", reasonably priced AND there's the amusement park on top of the tower. For older kids who like adventure rides, this is a good place to keep them entertained. New York New York also has adventure rides for kids, BUT is going to cost more. GL to you!