Conducting psychophysiological investigations outside of lab settings has a lot of potential for academic applications as well as for industries concerned about the quality of their user and customer experience. Prior work employing in-the-wild methodologies often focuses on a limited set of biometrics, which constrains the depth of the insights generated by such investigations. In this work, we field tested a new system for multimodal data acquisition and present exploratory results and insights from two ambulatory data collection sessions, held during public events. Through a spatially grounded analysis, we investigate the feasibility, and practicality of multimodal ambulatory psychophysiological inquiries, and hypothesize on areas of added values for public event organizers.