Ah, I see. According to Wikipedia, "George Takei, Walter Koenig, Majel Barrett, Wil Wheaton, and Grace Lee Whitney (all from Star Trek or Star Trek: The Next Generation), as well as Bill Mumy (from Lost in Space), were guest stars in "Alienated!" one sixth season episode, which involved an apparent extraterrestrial life alien abduction and coverup." I think I may have drifted away from the show by then, though I could've seen the episode and just forgotten.
Well, TAS isn't TOS, and the rec room was only shown to be capable of simulating environments, not people. The "holodeck episode" as a narrative trope was an invention of TNG. The closest thing TOS had was "Shore Leave."
As for the SNW trailer, we see something that looks like a holodeck, but we don't know the context yet, and things are not always as they seem. As Sherlock Holmes liked to say, it is a capital mistake to theorize in advance of the facts.
