I don't remember Timbo saying that this was a family vacation but if it is, I would have to agree with the others who have said that Vegas isn't really a family spot. They tried to make it a more family-oriented vacation in the 90's but that really don't go over too well and have since gone back to a more adult-oriented atmosphere recently (ie. the MGM Grand Theme Park closed a few years ago and the Pirate Battle at Treasure Island has just undergone a makeover that features scantity-clad women instead of pirates). We took our kids for a few days about 3 years ago when they were 15 and 12 and were able to do some family oriented things with them, such as Caesar's Magical Empire dinner show (which was great but has since closed) and some afternoon shows (magician Mac King at Harrahs, magician Rick Thomas at the Tropicana and ventriloquist Ron Lucas at the Rio, are all good shows for the whole family). Overall though, it was tough to keep them entertained the whole day and we didn't really get to do much gambling, which after all is why most people, including us, go to Vegas. We won't bring our now 18 year old daughter back, and she has no desire to go back, until she is 21 and is actually allowed on a casino floor.
That said, to answer you original question, there are no Vegas boards that come close to the DIS, but the one I like best is LasVegasTalk.com. Another is Vegaswatch.com but that seems to have less and less info lately.
Hope this was a little helpful! Good luck with your trip and feel free to ask any Vegas questions you might have (We ususally go at least once a year).