FKB shows twin beds as does I love lucy. I know we see June and Ward come out of the bedroom, but other than the one where Wally gives a dance, do we see the inside of the bedroom?

We see their whole bedroom (twin beds) when Beaver invites Mr. Jeff, the tramp to use their bathroom. The bedroom is totally different in Party Spoiler. We never see their bedroom in the first house and there is no room opposite the boys’ room until maybe when Larry spends the night and gets sick.

Do we see a glimpse of the twin beds in the episode when Beaver drives the car out of the driveway, at the end of the episode? Strikes me no, maybe we only see those twin beds twice in season 6, with the different set construction, as you mentioned.

As mentioned in another thread, the Ozzie and Harriet beds started out single and over 14 seasons, changed to double. Maybe they said to the censors, after all, we're REALLY married.