I make a lot of noise during sex, and the first time we slept together, my boyfriend stopped and asked me if everything was alright.
He even asked me if I was acting. He had never been with a screamer before. We're going abroad for a family wedding and his parents have organised a villa for a group of us to stay in. My boyfriend has begged me not to moan, groan or scream during sex. I can't guarantee this because there are times I don't even know I'm doing it. I've suggested to him that we just alert his parents to the fact that I'm pretty vocal in bed, but he is dead against this. Do you really think his parents would be that mortified?
Everyone is different, so it's nothing for you to be ashamed about. You're obviously good at letting go and enjoying the whole experience, which is entirely allowed.
But I totally agree with your boyfriend's reluctance to pre-warn his parents about your noises in bed. It would be a bad idea. They really don't need to know about your sex life, and it would be extremely uncomfortable for them to either spend the time anticipating your screams and groans or actually having to listen to them. No parent wants to hear their son having sex. So my advice is to either keep your bedroom antics to a minimum during your time abroad or else work on reducing your noise levels.
Do a bit of research online and read about other people's strategies to deal with their sex noises.
Practise keeping a sock or handkerchief handy to help muffle the noises. I strongly advise you to take these steps to tackle it rather than tell your boyfriend's parents.