To make sure they are up? Back story is we have a house of "professionals" who live four doors along (no idea how many live there, but there is a few of them) and come the summer months they hold regular parties that spill into their back garden and keep us all awake, we knock when they wake our kids up but they are always so very pissed and it's like talking to a bunch toddlers when asking them to take the party indoors.
Last nights party went on till 3am, we went and knocked 4 plus more times before the noise settled down. I've got work today so I can't have a lie on go catch up on my sleep 
Would I be unreasonable to go and ring their doorbell every half hour with a cheery smile to make sure they don't get to sleep off their hangover?
I've just lodged a complaint with the local council but I'm sitting here so tired and fed up.