Initiation Party Activities Rookie Initiation Ideas?

Rookie Initiation Ideas? - initiation party activities

We are a rugby team for girls and more than half of the team as rookies. Last year, the first season of our team was, there was no reason for the introduction. I need ideas for a celebration that may include the initiation of drinking, hair dying, and whatever you think of crazy.
I was able to invite the boys team, but I'm not so sure.