Part of me wouldn’t mind waiting, see how much they absorb from pop culture osmosis alone.
This was pretty much my experience growing up.
I got into Trek first, knowing pretty much nothing about it until my mother rented Search for Spock on vhs for me when I was five (this would’ve been 1990, so do the math). That’s kind of like going into Star Wars cold and starting with ESB or RotJ, but either way the movie blew my mind and I was hooked. I saw all five films before seeing Undiscovered Country in the theater.
Star Wars was something I just always knew about and don’t remember “discovering.” So yeah, I never had that experience of sitting down and watching Empire for the first time and finding out the big twist. My earliest clear memory of watching the “I am your father” moment for the first time was after I’d already seen RotJ on USA, and I’m pretty sure it wasn’t even part of a proper viewing of ESB but rather a clip on some making-of / retrospecticus special.
But certainly by ‘93 or ‘94 at the latest I’d seen all three from beginning to end.