How we know

The date coming from the annual sales event, and the per format benchmarks, are stated in the agency's Dream Days account. The quoted line is only a description of the campaign.

Who says so	Open Influence, the agency. Note this row holds two separate relationships: Merkley+Partners is the Omnicom lead creative agency and has nothing to do with the creator work. Read it
What the agency was asked to do	"Mercedes-Benz partnered with Open Influence to launch the Dream Days campaign, a fresh take on automotive creator marketing that celebrated the brand's 2024 lineup through aspirational, audience-centered content." (Open Influence case study)
How that happened	Not published, two separate relationships likely - Merkley+Partners (an Omnicom-owned NYC ad agency) is described in trade sources as Mercedes-Benz USA's lead creative/marketing agency, a role that long predates influencer marketing as a discipline, so it reads as a prior/incumbent creative-agency relationship rather than a fresh influencer pitch. Open Influence separately published a 2025 case study for Mercedes-Benz's 'Dream Days' creator campaign ('Dream Mode'), but does not state how that relationship started or whether Open Influence holds an influencer AOR role.
How long it took	No timing evidence found for either agency. Open Influence's Dream Days case study is dated December 2025; no appointment date or contract length is published.

Every other case where someone else set the date →

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Every case here carries the one link that proves it, and names who said it. Where that is the agency describing its own win, the card says so rather than hiding it. Cases where nobody ever documented a reason are not on this page at all. Brought to you by Influencer Advisory, your influencer marketing partner for supplement, health and beverage brands.