"Mr. Dithers invites the Bumsteads on a South American cruise. Somehow Dagwood winds up as the female drummer in the ship's band, while Penny Singleton gets to show off her Broadway background in some lively musical numbers."
Penny Singleton
as Blondie Bumstead
Arthur Lake
as Dagwood " Dag " Bumstead
Larry Simms
as Alexander Bumstead
Daisy
as Daisy
Ruth Terry
as Singer
Danny Mummert
as Alvin Fuddle
Jonathan Hale
as J.C. Dithers
Janet Burston
as Little Girl Singer and Piano Player
Kirby Grant
as Hal Trent
Tito Guízar
as Manuel Rodrigueu
Irving Bacon
as Mailman (uncredited)
Eddie Acuff
as Cab Driver (uncredited)
Harry Barris
as Musician (uncredited)
Cecilia Callejo
as Beautiful Girl Picking Up Gloves (uncredited)
Paul Ellis
as Steward Taking Dagwood's Sandwich (uncredited)
Bess Flowers
as Well-Wisher at Ship's Departure (uncredited)
Joe King
as Captain of the Cruz del Sur (uncredited)
Phil Kramer
as Steward (uncredited)
Eddie Laughton
Perc Launders
as Bass Fiddle Player (uncredited)
Harold Miller
as Shipboard Extra (uncredited)
Bert Moorhouse
William Morgan
as Musician in Orchestra (uncredited)
William Newell
as Steward Ringing Chime and Crying (uncredited)
Joe Palma
as Sailor Chasing Dagwood (uncredited)
Ralph Sanford
Red Stanley
Marvin Stephens
as Messenger Bringing Drums (uncredited)
Karen DeWolf
Screenplay
Leo Arnaud
Original Music Composer
Robert Sparks
Producer
Henry Freulich
Director of Photography
Director
Richard Flournoy
Morris Stoloff
Chic Young
Characters
Gene Havlick
Editor
Lionel Banks
Art Direction
Jerome Pycha Jr.
Paul Mertz
Frank R. Strayer
Monica
Costume Designer