Cal. Bus. & Prof. Code § 25503.61
(a) Notwithstanding any other provision of this chapter, a beer manufacturer, holder of a winegrower’s license, rectifier, winegrower’s agent, holder of an importer’s general license, distilled spirits manufacturer, craft distiller, holder of a distilled spirits rectifier’s general license, or distilled spirits manufacturer’s agent, regardless of any other licenses held by the foregoing, may sponsor events promoted by, and may purchase advertising space and time from, or on behalf of, an on-sale licensee that is the owner, operator, agent of the operator, or assignee of the operator’s advertising rights of a mixed-use district subject to all of the following conditions:
(b) Any sponsorship of events or purchase of advertising space or time conducted pursuant to subdivision (a) shall be conducted pursuant to a written contract entered into by the beer manufacturer, holder of a winegrower’s license, rectifier, winegrower’s agent, holder of an importer’s general license, distilled spirits manufacturer, craft distiller, holder of a distilled spirits rectifier’s general license, or distilled spirits manufacturer’s agent and any of the following:
(g) Nothing in this section shall authorize the placement of advertising space or time directly in, or on the exterior of, the premises of any on-sale licensee in the mixed-use district except as follows:
(2)