I've brought my kids to the games they are now 5 and 3. My wife comes too so that helps.
They love basketball but they really love little red; the band; the cheerleaders and stuff going on the big screen.
Popcorn is good. I don't bring them to the late games so it won't get too past their bedtime.
Worst things are trips to the restrooms. And yes they always go at the most worst times. Also I can't yell so much as they don't like it when daddy is yelling.
Of course this will be the first time in a sold out new arena so it may be a different experience. The best games to take the kids were usually the non-conference games with the Bob half full at best so there was plenty of room.