Ofline,most Probrably to talk to them and try to chance some things,I never watched the couple much but at least her shouldn't drink so heavily and the rest..Basicaly it's like fire up the "bomb".
it would be fine an couple hours of dancing,some tease,but four,five straight hours it's to much,and then if they have indeed sex I bet will be sub par.But Dean was talking to someone on phone..maybe things will change a little.
Seems what they are doing in toilet it's drug&,the blonde got out with some paper thing in hand,and the three seem to be looking to the same spot of toilet(right side).But of course other thing could be also happening there,one of the times was for ten minutes or so.