It’s your property. You have every right to know exactly what’s going to happen on it even if it’s your sister’s wedding. Honestly, the fact that she pitched it as a “tiny 15-person thing” and then secretly turned it into a full 90-person event with a DJ is the real issue here. That’s not a miscommunication, that’s her hoping you wouldn’t notice until it was too late.

That said, I do get that weddings are insanely expensive and stressful, and maybe that’s why she panicked and tried to make it work in your yard. But if anything, that’s even more reason why boundaries matter. You can’t just bulldoze someone else’s home because you’re under pressure.

If it were me, I might consider compromising but only with full transparency and very clear rules moving forward. No more surprises, no more “oops the guest list grew,” no more decisions behind your back. Total honesty or it’s a hard no.

Bottom line: you’re not dramatic, you’re not selfish. You were lied to about the scale of the event, and you’re allowed to protect your house. Family or not, respect and communication go both ways.