As a couple (Valentine and Greene) prepare to get married all sorts of uninvited and unexpected guests arrive and secrets are revealed.
| Actor | Role |
|---|---|
 Scott ValentineJeff | Jeff |
 Eileen BrennanMaude | Maude |
 Cloris LeachmanMrs. Haldane | Mrs. Haldane |
 Michele GreeneMargo | Margo |
 Mark Linn-BakerNorman Brinkmann | Norman Brinkmann |
 Ellen Albertini DowGrandma Haldane | Grandma Haldane |
 Wendy KilbourneAlice | Alice |
 Dick Van PattenRick | Rick |
 Jane SibbettJude | Jude |
 Jennifer SavidgeTina | Tina |
 Michael TalbottMarty | Marty |
 Max WrightHoward Haldane | Howard Haldane |
 John RatzenbergerWalt Caruso | Walt Caruso |
 Barbara BillingsleyNot listed | Not listed |
 Joel BrooksNot listed | Not listed |
 Earl BoenMr. Palmer | Mr. Palmer |
 John DiSantiCabbie | Cabbie |
 Linda DonaCathy | Cathy |
 Marianne MuellerleileLinda | Linda |
 Ed WilliamsReverend Morton | Reverend Morton |
 Robin AntinKimberly | Kimberly |
| YYoshio BeJapanese Translator | Japanese Translator |
| TThomas BellinHotel Doctor | Hotel Doctor |
| DDian KobayashiTravel Agent | Travel Agent |
| AAlice LunsfordHostess | Hostess |
| JJon MenickClerk No. 1 | Clerk No. 1 |
| BBill WileyClerk No. 2 | Clerk No. 2 |
| AAdam ZerkelJason | Jason |