Certain mission objectives appear straightforward but prove challenging without proper guidance. When concluding the "Wedding Crashers" main quest, you'll need to locate the newlyweds to offer congratulations in Kingdom Come: Deliverance 2.
Locating the Newlyweds in Wedding Crashers
When Otto von Bergow fails to appear for Lord Semine's wedding, you must find alternative methods to meet him while completing the quest. To formally conclude "Wedding Crashers," you're required to congratulate the bride and groom before departing the festivities - a task complicated by their apparent absence.
Complete any remaining wedding activities before approaching Agnes, as speaking with her triggers the quest's conclusion and transports you to Trosky Castle. Fortunately, most optional wedding content occurs before the ceremony.
While you can inquire about the couple's whereabouts with other guests (none will provide useful information), you can proceed directly to Agnes' location. If you previously raided the wine cellar for schnapps, finding her becomes considerably easier.

Head to the main building where guests congregate near the staircase. Opposite them stands a guard beside a doorway leading to the wine cellar - there you'll find Agnes alone and in tears, visibly distressed by the wedding's unfortunate turn of events.
The Unexpected Fight Sequence
Dialogue choices with Agnes ultimately converge when selecting the congratulatory option. She reveals Olda has already departed without her, establishing a recurring pattern of abandonment. This conversation sets up future narrative branches where you'll potentially align with Semine or Hashek in subsequent quests.
Regardless of your dialogue choices, the encounter culminates with an intoxicated guest sparking a chaotic brawl. You may either: wait out the confrontation in the cellar, or participate in the melee - neither approach affects the quest's resolution. The sequence concludes with a cutscene showing Henry and Hans imprisoned at Trosky Castle.
This completes the search for the newlyweds in Kingdom Come: Deliverance 2. Your next challenge awaits in "For Whom the Bell Tolls," a time-sensitive quest where prompt completion yields reputation rewards.