Planning- choosing a location

For my short film i am wanting to use a public area so i can then focus on how busy and loud environments affect people with autism, i am wanting to choose one location for the whole duration of the short film. The locations which i have in mind are a shopping centre, a busy street, a park or a shop. These locations are stereotypically busy which suits my exception of my wanted location. By using a busy area I will be able to capture people's response for example them looking at the child. The sounds that I am wanting to highlight are things that would be found in these locations for example the sound of keys, a vibrating phone, someone chewing chewing gum, someone tapping their feet, the sound of someone take a photo. Depending whether I use a outside location of not will determine what sounds I'm will be wanting to emphasise. I also possibly want to emphasise certain colours that can be seen.