That poor kid is going to be known for having a nutcase mother who invoices people for his party and is so spiteful she'd rather spend 4 times the cost of the 15 to take it to court.
I'd love to do this! Both my kids are winter babies, worse still Tassie winter babies. So we always have to fork out for some kind on party place. I used to host at home but it's crazzzzy with school ages kids and I hate the chaos being contained to indoors!