You don't schedule a party over a tournament game.
Just because YOU wouldnt do it, doesnt mean that others shouldn't, couldn't or wouldn't have one then for whatever reason.
I seriously doubt that there is a family wedding or a sick grandparent because if that was, they would have given that as a reason. Even those excuses I would have understood but just to schedule it.
Yet you DO NOT KNOW the reason it was scheduled when it was and really it's not your concern. I hope your daughter and her teammates arent as worked up about this as you are. Otherwise, with or without the #6 golfer, they aren't advancing.
I really dont understand why as a PARENT of a player you are this worked up about it. I could see the players getting upset but I dont know that a parent should be this worked up about it.
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. Trust me, with around 200 teenage girls in all their buxom glory I don't think there was one thought of grandma's bath last night!

Hmm, maybe he gets it. I know my family does, thankfully. (If Grandpa's a Veteran, I suspect he might understand better than most are giving him credit for.
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