The Wedding Coordinator acts as a one-off shield against the next Ability played against the player. When an Ability is played against the player, then the Wedding Coordinator is discarded (and the card with said Ability is also discarded).
If the Ability played against the player does not actually have any affect on the player then the Wedding Coordinator is not discarded and remains in play. (E.g. if an Ability is used to take the player’s drinks, but they have no drinks to take, the Wedding Coordinator remains in play).
If a player has the 'Unique Item - Celebrant' in play and a wedding coordinator. The first Ability played against the player is blocked by the celebrant ability "Stop the first negative ability played against you each turn", subsequent Abilities will be blocked by the Wedding Coordinator.
The Wedding Coordinator is discarded if the Crazy Ex, The Plus One or Screaming Baby card is played against them. (E.g. Both the Wedding Coordinator and Screaming Baby card would be discarded).
If The Crazy Ex, The Plus One or Screaming Baby are already laid down in your guests, then The Wedding Coordinator ability has no impact on their abilities.
If a player owns multiple Wedding Coordinators then they can block multiple Abilities in a turn until all Wedding Coordinators have been used up.
The attacking player may choose to no longer play the ability if they are made aware that it will be blocked by a Wedding Coordinator.
The Wedding Coordinator Ability is not active until the Wedding Coordinator has been played and is in your guests.