`Service with a Smile' marks Uncle Fred's third visit to Blandings in his quest to spread sweetness and light by bringing to a suitable conclusion Bill Bailey's wooing of Myra Schoonmaker. Myra Schoonmaker was a Blandings no show from `Heavy Weather' when she was impersonated by Sue Brown under the influence of Galahad in order to marry Ronnie Fish. Here Myra appears under her own colours whilst Bill assumes the name of Brazilian Cuthbert Meriwether. The marriage has been forbidden by Lady Constance who ends up becoming betroved to James Schoonmaker under instruction from Uncle Fred. A further engagement brought to fruition is that of Archie Gilpin and Millicent Rigby.
As Fred puts it `There is always apt to be trouble when you start spreading sweetness and light. You find there isn't enough to go around and someone has to be left out of the distribution. Very difficult to get a full hand' and so there is no happy ending for Blandings regulars Lord Tilbury, of the Mammoth Publishing company whom we met previously in `Bill the Conqueror', `Sam the Sudden' and `Heavy Weather', or the Duke of Dunstable whom appeared in `Uncle Fred in the Springtime'.
As with most Wodehouse, and particularly Blandings, the plot is of little consequence and we are generally delighted by the casts most eccentric characters on being given an airing and the show here is stolen by Uncle Fred and Lord Emsworth but especially George Threepwood, Emsworth's grandson, and his Hollywood gangster dialogue and his employ of said on Dunstable, now that he has graduated from shooting people with his air gun (`The Crime Wave at Blandings') to his camera.