AITA for using flash cards to explain to my brother and his wife why they can’t bring their rainbow baby to my wedding?

A Reddit user faced backlash after using flashcards to reiterate a “childfree wedding” policy to his brother and sister-in-law, who insisted their “rainbow baby” should be an exception. Despite several verbal explanations, the brother continued to push, prompting the user to resort to the visual aid, which escalated tensions. Read the story below to decide if the user went too far:

‘AITA for using flash cards to explain to my brother and his wife why they can’t bring their rainbow baby to my wedding?’

Here’s the comments of Reddit users:

Was using flashcards an effective way to handle the situation, or did it add unnecessary fuel to the fire? Should the couple have respected the childfree boundary, or does the context of a “rainbow baby” justify their request? Share your thoughts below!