Is it possible to do event Tera Raids before post game?

Question

So, the 5 star shiny raquaza event is upon us, and my sister wants one, but she hasn’t beaten Pokémon violets main story, and won’t be able to before the event is over. Is it possible to challenge the raid without having beaten the game? (We only have one switch, and she doesn’t have the online membership)

Comments

I can test once the raid releases.

Answer 1

According to the trailer released by the Pokémon official YouTube channel, Rayquaza raids can only be accessed after beating the main story. As far as catching one in her own game, your sister's out of luck if she can't finish the story first.
Source: YouTube. Skip to the 1:01 timestamp for details.

Comments

OK, thanks for letting me know. I do remember at one point though, I had some friends over, and one of them hadn’t beaten Pokémon violet yet, and we were hosting a raid with a five star event raid, and he was able to join and catch the Pokémon. Do you think that’s an option?

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That's possible, I did that for Iron Leaves during its first run and I was carried by friends. It was my friend's raid. I have no reason to think anything different would happen here.