WWYD in this situation:
The house next door to us (terrace) is rented. The couple that live there are late 30s (ish) and we are on generally good terms with them, though I wouldn't say we are friendly IYSWIM.
Currently, as in right now, they are having a loud gathering (I think there are about 4/5 of them there) and have been since I woke up about an hour ago. I'm not sure they would have woken me up if DD hadn't woken up screaming at that time.
When I say loud gathering, I mean they were upstairs talking very loudly and having a bit of a laugh. Our walls are 8" thick at best so they might as well have been within my own house. They then moved downstairs and proceeded to sing loudly for a good 20 minutes but seem to have quietened now.
They've done this a few times previously, most recently about 3/4 weeks ago and not for months before that so it's not a regular thing. Because of this I've never mentioned it before as it never seemed worth it to piss on their bonfire for a one off thing.
However, I feel that by not mentioning how loud they are before now, I've set a precedent and would sound like a complete bitch to say anything to them now.
I should add that the increased noise earlier also prevented DD from going back to sleep however can't fully blame nextdoor as she is possibly teething so expected a rough night already anyway.
WWYD- anything at all? I'm tempted to mention to them in passing next time I see them. WTBU?