Men make clothes for the women they'd like to be with or in most cases the women they'd like to be.
My husband's family is military. Preparation is just, from that family perspective, it's just a part of what makes sense to do. You buy insurance for your house; you have a go bag.
As a busker, one thing that does not work is self-consciousness. A busker needs to be working. A busker needs to shed all ego and get down to work. Play your songs, play them well, earn your money, and don't get in people's way.