Why not jump into the night say (for the guys) where they have won and won big and are now having a few ...still four or five or ten  drinks to celebrate ...any daytime sex or other activities can be referred to in a bridging post<br/><br/>Saying that if you do want to write each couples day time sex I'm good for that but since the story kicks in after each guy goes into the wrong room much later than agreed (presumably its dark and the ladies are woken by what they assume is their horny husband otherwise ladies waiting up for them would mean the jig as they say would be up) I'd prefer in some ways to have the first sex be written for the mistaken couples......but that's just me.