Jerry's wedding actually occurred four years earlier: Rain, Snow and Rice (1967). His bride was named Margie, played by Arlene Golonka.
Jerry's statement that he and Ruth have been married 7 years and his suggestion that neither Donald nor Ann could have known what it was like on his honeymoon run contrary to Rain, Snow and Rice (1967), which aired almost exactly 4 years earlier and involved a series of mishaps that compelled Ann and Donald to spend the honeymoon weekend with Jerry and his bride.