Sparks joined wsj at Journal House in Cannes for a much-needed conversation on measuring experiential.  Melissa Levy, President of Sparks, took the WSJ stage alongside senior marketing leaders from canva xbox , and salesforce to tackle the question that defines the next chapter of experiential: how do you measure what live actually delivers — beyond foot traffic, beyond impressions, beyond the metrics that fit neatly into a dashboard. #canneslions2026 #journalhouse #experientialmarketing #poweredbysparks