I get on with my neighbours, but the parents have gone away and their son (approx 20yo) is playing loud dance music. It was on til 1am on Saturday, which wasn't the end of the world as I was awake anyway. However, it a work night and I want to go to bed! I'm not good at confrontation but if it doesn't stop at midnight I may have to say something. AIBU and is it my fault for not saying anything after Saturday?