Food availability, perceived food environment and social norm perceptions of healthy and vegetarian food consumption at a public music festival in the Netherlands: a cross-sectional study.

The festival's food environment appears unsupportive of healthy and vegetarian food consumption. The limited availability of healthy and vegetarian food coincided with weak social norm perceptions encouraging their consumption, particularly descriptive norms that arise from observing others. The food environment may stand in the way of developing descriptive norms for the consumption of healthy and vegetarian food, as people can only see others consume food that is available. Implementation of public event policies could support healthier, more sustainable festivals.