The Unwritten DDR Rule-
By Chris Ratliff (http://www.go.to/RichmondDDR)

You guys don't know about the unwritten DDR rule? I haven't been playing that long, but there is 
one rule that absolves DDR players from all repercussions involving injury to small children 
invading our space on the stage:

If our space is invaded, we have the right to ignore their presence, even if that means they are 
injured in the process. 90% of the time, the biggest moneymaker in any arcade is the DDR machine(s). 
The arcade owners/managers/employees usually know this, which helps a lot. They rely on the regular 
DDR players for a good portion of their profit, not only because of the money they make off them, but 
also the crowds that gather and through word of mouth about "that guy/girl doing some freaky-hard dance." 
If the DDR player does not like the atmosphere he's in, and has to deal with little kids (deal = be 
nice to them), they're either going to play somewhere else, or at home. Thus, lost money for the arcade. 
Yes, DDR is that big. Especially considering the investment an arcade puts into a machine  

All the stories I've heard so far involving that situation, where a little kid was going to/got stepped 
on or hurt, and the parents bitched and yelled, the parents and kid were KICKED OUT of the arcade. 
So don't feel bad about stepping on a kid. Get your money's worth outta the game!