Dinner is signature now, so expect a bit more of an upscale feeling (not much though, tables are still relatively close (though I never get the feeling of sitting on top of another party... even before it was signature dinner).
I was just there on Thursday night for dinner and there were plenty of kids around and saw both sides of the spectrum.
Two tables over was a larger group with 3-4 under 10 (and over 3-4 or so). Near the end of the meal, the kids got a bit wild and were up and about around the table. They didn't mess with other tables, but it was a bit distracting and they got in the way of the servers a few times.
Right next to me was a family of 3 with a little 1 or 1 1/2 year old (I'm not very good at judging children's ages, or adults for that matter). And while he was a bit fussy at times, it was never to the point of distraction. In fact, I really enjoyed watching him. His parents did take turns and take him around for walks a few times during the meal, which helped I'm sure. He was also super adorable, which may have skewed my perception a bit.
So, if your kids can behave for 60-90 minutes at the meal, or you're willing to take them out if they do go nuts, then go for it. They'll certainly not be the only kids there.