When assessing a 'greenfield' site for a large public event, what specific infrastructural challenge presents the greatest initial hurdle for rapid deployment of emergency services compared to a permanent venue?

A 'greenfield' site refers to an undeveloped area of land, typically rural or suburban, that lacks existing buildings or infrastructure. When assessing such a site for a large public event, the greatest initial infrastructural hurdle for rapid deployment of emergency services, compared to a permanent venue, is the severe lack of robust, established, and clearly defined access roads and internal vehicle pathways. Unlike a pe....