In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk.  Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...
Just shut up and follow the plan. 
This is all for my mission.
.اخرس واتّبع الخطّة فحسب. كلّ هذا من أجل مهمّتي
Verhalte dich einfach wie abgesprochen.
Das dient alles der Mission.
Todo irá bien.
Tú sigue el plan. Es por la misión.
Todo irá bien.
Tú sigue el plan. Es por la misión.
Suis le plan,
c’est pour le bien de la mission.
Sta' zitto e segui il copione.
È per il bene della mia missione.
Cale a boca e siga o plano.
É pela minha missão.
Не бухти, а делай, как сказал.
Это тоже работа.