The act ends with Sam leaving (allegedly to attend to urgent business) and Karen sadly reflecting on how much things have changed since they were young.

The second act, Visitor from Hollywood, involves a meeting between movie producer Jesse Kiplinger and his old flame, suburban housewife Muriel Tate.

The third act, Visitor from Forest Hills, revolves around married couple Roy and Norma Hubley on their daughter Mimsey's wedding day.

Maureen Stapleton was nominated for the Tony Award for Best Performance by a Leading Actress in a Play but lost to Zoe Caldwell in The Prime of Miss Jean Brodie.

The play's first national tour, starring Forrest Tucker and Betty Garrett and Dana Ivey in the supporting female roles, opened on October 7, 1968.

[11] In June 2023 it was announced that the Broadway production of Plaza Suite would transfer to London's West End, with Broderick and Parker reprising their respective roles, and Hickey returning to direct.

[13] Simon adapted his play for a 1971 film starring Walter Matthau, Stapleton, Barbara Harris, and Lee Grant, but he was unhappy with the outcome.

[14] On December 31, 1982, HBO broadcast a production (shot in front of a live audience) starring Lee Grant and Jerry Orbach playing all three roles.

Starring opposite her were Hal Holbrook as Sam Nash, Dabney Coleman as Jesse Kiplinger, and Richard Crenna as Roy Hubley.