(Spoilers) Does "Hues of the Violet Garden" feature any change if the player never meet a character involved in the event before?

The 2.6 event "Hues of the Violet Garden" has quite odd requisites:

• Reach Adventure Rank 30 or above
• Complete the "Ritou Escape Plan" part of the Archon Quest: "Chapter II: Act I - The Immovable God and the Eternal Euthymia"

To best enjoy the event, complete these Story Quests first:

• Kamisato Ayato's Story Quest "Cypressus Custos Chapter: Act I - The Firmiana Leaf Falls"
• Raiden Shogun's Story Quest "Imperatrix Umbrosa Chapter: Act II - Transient Dreams"
• Sangonomiya Kokomi's Story Quest "Dracaena Somnolenta Chapter: Act I - Warriors' Dreams Like Spring Grass Renewing"
• If the player has not completed Kamisato Ayato, Raiden Shogun, and Sangonomiya Kokomi's Story Quests, they can enter the event through "Quick Start."

The event unlocks only when all the above requirements are meet.

If a player has not yet played the three story quests mentioned in the notice, they can use a "quick start" feature to play the event as if they had - in this case the event is exactly the same and obviously the plot will reference events they may have not yet experienced. For example

the event takes place after the travel decree has been revoked and that only happens after the player completes the second act of Raiden/Ei story quest.

I was trying to make sense of the quest dependencies.

In order to play Raiden Shogun's Story Quest "Imperatrix Umbrosa Chapter: Act II - Transient Dreams" one must have played Act I before. To play Act 1 you must complete the Inazuma story arc, and to complete Inazuma you are forced to play both Ayaka and Yoimia Story Quests first acts. Therefore, this means that fulfilling the Raiden Story Quest Act II requirements means that the player has meet Kokomi, Ayaka and Yoimiya in the game. Obviously, the Kamisato Ayato's Story Quest requirements means that you will have meet Ayato. Since you are in Inazuma you must have completed the Mondstadt story arc and thus you have meet Jean and Venti and at the very least heard rumors about Albedo and you also have meet Kazuha in the story before in order to reach Inazuma in the first place.

So basically everyone who was shown at the event in the version trailer to be covered.

Yet there is someone else...

none else than Klee, also know as "What do you mean by 'Mihoyo favorite', surely someone else has gotten pictures in their books", "Where is the kimono skin she had in that promo image" and "Kokomi #1 enemy".

Because of this inclusion I would have expected that the event

also required that the player completed the Trifolium Story Quest Act I chapter but it does no, meaning that the player may have never player the quest that introduces Klee in the first place.

For that reason I am wondering if the game in any way acknowledge the fact that

technically the Traveler may never have meet Klee face-to-face before or it simply goes on as normal with Klee behaving like "Traveler's self adopted lil-sister" with no previous plot explanation or anything.

I have found clues that seems to indicate that

never meeting Klee before at least triggers a prompt when se first appears

But does any other dialogue or scene get altered beside that?

And what about Xingqiu and Chongyun who based on the trailer should also appear at the festival at some point?