No, Dark, unfortunately you're not correct on this point. I'm literally reading Pet Sematary at the moment. When the movers first come, Louis mentions them moving a double bed in. Early in the story, when Louis and Rachel fight, Louis comments that when he gets home, Rachel will undoubtedly be huddled on the far side of the bed (single, one bed) with Gage, leaving him feeling alone. By the time he has the dream about Victor Pascow, however, they are lying in adjoining twin beds. There is even mention, later on, after Rachel confesses about her sister, that Louis brings her into his bed when she wakes in the night.
So nope, he gaffed on this one, pure and simple. Doesn't ruin the book or anything, but definitely a gaff.
Also, I'm pretty sure the Creed family vehicle changes from a Fairlane to a Civic to a station wagon throughout the novel. I could probably pick out other inconsistencies if I tried.
It's still quite a good book though. It was your talking about it that made me want to reread it, in fact, since it's been awhile. Also makes me want to watch the 2019 film version, since I hear it has a wickedly dark ending.
https://www.dropbox.com/s/z8ls3rc3f4mkb … n.txt?dl=1