My wife always was quite vocal. She can be quiet but she says she can't enjoy it as much when she is quiet and needs to let it out.
When camping, in a hotel room with thin walls or at a friends place she sometimes says "ok but we need to be quiet this time" - but she never stays quiet
when aproaching her first climax she loses all inhibition and I love it.
Especially if she reaches her first climax by oral sex she then loudly demands me to fuck her pussy and encourages me to go harder while moaning loudly.
Back in college one of the wifi networks was called "I can hear you fucking" a few weeks after we moved in and it had good signal strength, so I assume it was one of our neighbours. Poor guys/girls, never seen any of them with someone else and they had to listen to us fuck almost every night....
Once at a festival campground we had loud sex in the middle of the day, when we came out of the tent a group next to us applauded
Our neighbour had a girlfriend who was also quite vocal too and they kept the windows open while fucking in summer. When we heard them moan it always encouraged us to join in and vice versa.
Unfortunately they broke up, besides her lovely moans she was really good looking and I found a sneaky way to look into their apparment through a reflection and saw her naked a few times and even saw them fuck once.