Well I don't have kids.. and now I think having been sober for a while, sometimes I read about these type of 'events' that seem like challenges, and can't imagine why it would make sense to drink in that environment in the first place (a kids party). And then of course I remember the fact that it was critically inappropriate for me to wake up shaking at 6am and slam a few shots of vodka before engaging in ANY part of my life. Crazy how we associate things that to the 'outside' (of the alcoholism) world would seem crazy to think of drinking, as things that are our biggest temptation.
All that to say, if you HAVE to go bring something with you to drink.. not sure why it helps, but for me it always has! "want a drink?" "no thanks, got one.." amazing how little people really care about what we sip on..