We live in the States and it's a bank holiday here today too, but for Memorial Day (which is to remember people who died whilst serving in the armed forces.)
We live down the hill from a cemetery. It's a pretty small and old one, nobody has been buried there in the last 70 odd years.
This weekend has seen quite a few people up there, mostly tourists but I expect there's a few who are visiting the graves of relatives.
We've been out in the garden most of the weekend planting the veg patch and ds (3.5) has been playing. He's not a particularly noisy kid at all, doesn't shout or scream (or hasn't this weekend at least 
). Ddog has been out with us too, occasionally will woof when she hears someone up at the cemetery (she has radar ears) but after a minute or so we'll put her inside if she's ignores requests to stop.
I just had somebody come to my door and tell me I should have more respect and keep ds and ddog inside all weekend as they can be heard from the cemetery. I apologised and asked if they were visiting a relative there and they said no they were just sight seeing but were still offended.
I'm in two minds as to whether I'm mortified and have been disrespectful, the cemetery was here before our house was and we choose to move here or just eh, the kid was playing in a normal, babbling to himself kid way and it's silly to have to keep him inside all weekend.
Dh thinks they were rude and ridiculous --but then he has the social awareness of a dead duck so that's no help.
Our nearest neighbours are a 10 minute walk away but I do always try not to let the dog bark or ds be too crazy as I'm aware sound carries.