Your incest was OFF. You reached far in the game, so you missed some good scenes in the whole game if this was off right through.
Your Save: I turned incest on and placed you facing Sarah.
Talk to Sarah, then go download stairs to hotel lobby. When it is 2300 go to hotel room, scene will trigger. On Sunday same at room and stuff after 1500 scene with Alexx in corridor and later at night with Sarah in room. Everything is mostly time dependent. But you had incest OFF, so unfortunately you missed scenes (sex scenes, with incest OFF they are not shown) at the tournament and way before in the game with everyone.
Sorry bro, only way to see them scenes is to start a new game and asap turn incest ON. Your current save, I turned it on and you will see all scenes as they should, from now on. It all depends on you if you want to replay and see content miss. But I highly recommend you start fresh. Incest ON is like mandatory for many family scenes.