The end credits shown on the METV syndication copy are not from this episode S3 E3. They are from the "Daughter for a Day" episode, which is S3 E5. There is no stewardess in "Tramp's First Bite" nor does Suzanne Cupito, who became Morgan Brittany, make an appearance. Tim Matheson, one of Beaver's later buddies, who accuses Tramp of the bite is not in the on-screen credits.
One more interesting addition to the fact that the MeTV version has the wrong credits. Both Suzanne Cupito (Morgan Brittany) and Tim Matheson were among the "kids" in the Lucille Ball/Henry Fonda version of "Yours, Mine, & Ours."
During a scene in the living room, right before it is revealed that Chip has given Tramp a dye job, we can see movement in the "dining room." The lights are not on in there, but it appears that "Mike" is (perhaps) reading his script, while the action takes place in the living room. When everyone appears to see Tramp's new look, then the light is on in the dining room.