My friend's son got married Saturday. A lady that wasn't invited had called my friend a few days ago and told her she heard her son was getting married and apparently talked for 45 minutes asking questions about the guest list, wedding, reception etc. My friend never invited her as everything was already planned and they are not close.
The lady ended up attending the outdoor wedding anyway and afterward went into the reception hall and was seen looking through the placecards of guest's names and table assignments. She did not stay for dinner.
She didn't cause any harm but it seemed like a pretty weird thing to do.
Have you ever crashed a wedding?