A fluid dispensing assembly has a fluid reservoir, a reservoir structure having at least one opening corresponding to a location of at least one fluid chamber in the reservoir structure, and a compliant film arranged to seal the opening and flex in response to pressure fluctuations in the fluid chamber. A system has a fluid supply, a fluid dispensing assembly having a fluid reservoir to receive fluid from the fluid supply, the fluid dispensing assembly having a reservoir structure with at least one opening corresponding to at least one fluid chamber, and a compliant film arranged to cover the opening such that a side of the film contacts fluid in the chamber and a side opposite the side contacting the fluid contacts air and is arranged to allow the film to flex.