An aircraft passenger seat assembly, comprising: an aircraft passenger seat (101a, 101b) comprising: a seatback (103a, 103b) configured to support an upper body of an aircraft passenger; a seatback bezel defining at least a portion of a rear seatback surface; and at least one privacy assembly, the at least one privacy assembly comprising: a closeout body coupled to the seatback bezel; and a privacy panel coupled to the closeout body, the privacy panel extending from the closeout body in order to at least partially separate a seating environment of the aircraft passenger seat from an adjacent seating environment of an adjacent aircraft passenger seat, wherein the privacy panel is removably coupled to the closeout body; characterized in that the closeout body includes a rear closeout body surface proximate to the rear seatback surface; wherein the rear closeout body surface includes one or more cupholder assemblies disposed on the rear closeout body surface; wherein the one or more cupholder assemblies include a support structure pivotably coupled to the rear closeout body surface; wherein the rear closeout body surface includes one or more storage structures; and wherein the one or more storage structures include at least one of a hook, a clip, a bracket, or a mobile device stowage assembly. an aircraft passenger seat (101a, 101b) comprising: a seatback (103a, 103b) configured to support an upper body of an aircraft passenger; a seatback bezel defining at least a portion of a rear seatback surface; and a seatback (103a, 103b) configured to support an upper body of an aircraft passenger; a seatback bezel defining at least a portion of a rear seatback surface; and at least one privacy assembly, the at least one privacy assembly comprising: a closeout body coupled to the seatback bezel; and a privacy panel coupled to the closeout body, the privacy panel extending from the closeout body in order to at least partially separate a seating environment of the aircraft passenger seat from an adjacent seating environment of an adjacent aircraft passenger seat, wherein the privacy panel is removably coupled to the closeout body; characterized in that the closeout body includes a rear closeout body surface proximate to the rear seatback surface; wherein the rear closeout body surface includes one or more cupholder assemblies disposed on the rear closeout body surface; wherein the one or more cupholder assemblies include a support structure pivotably coupled to the rear closeout body surface; wherein the rear closeout body surface includes one or more storage structures; and wherein the one or more storage structures include at least one of a hook, a clip, a bracket, or a mobile device stowage assembly. a closeout body coupled to the seatback bezel; and a privacy panel coupled to the closeout body, the privacy panel extending from the closeout body in order to at least partially separate a seating environment of the aircraft passenger seat from an adjacent seating environment of an adjacent aircraft passenger seat, wherein the privacy panel is removably coupled to the closeout body; characterized in that the closeout body includes a rear closeout body surface proximate to the rear seatback surface; wherein the rear closeout body surface includes one or more cupholder assemblies disposed on the rear closeout body surface; wherein the one or more cupholder assemblies include a support structure pivotably coupled to the rear closeout body surface; wherein the rear closeout body surface includes one or more storage structures; and wherein the one or more storage structures include at least one of a hook, a clip, a bracket, or a mobile device stowage assembly.