In his review for The New York Times, Walter Kerr wrote that the stars were "great." Martin has "several funny little vocal tricks...and always...with that mellow sound that comes from her throat like red wine at room temperature." Preston is "at his untouchable best when the show asks him to be pompous, and blissfully obtuse." The work of the director is noted: "Then, courtesy of Gower Champion, there are all those engaging things the two do together...one of them is literally the soft-shoe to end all soft-shoes, because it is done with no shoes at all." Kerr also wrote that the material was "on the whole barely passable, a sort of carefully condensed time capsule of all the cliches that have ever been spawned by people married and/or single...the lyrics are for the most part remarkably plain-spoken."Kerr, Walter. "Theater: Musical 'I Do! I Do!' Arrives", New York Times, December 6, 1966, p.58 In reviewing the new cast of Carol Lawrence and Gordon MacRae, Clive Barnes wrote in The New York Times that they "exerted a certain charm." The musical is "very slight indeed ... Carol Lawrence was more than [Martin's] equal. She did the younger scenes with less cuteness and her acting had a depth unusual in a musical. Mr. MacRae...has a better if more conventional voice."
