Oh, I’ll be following this with interest.
My Sister-in-Law snores like a train! She’s not overweight at a 9st size 12, doesn’t have a thick neck nor apnoea - sleeps on her side with her hands clasped like a child in prayer, but she snores like the devil!
She’s knows she does, but on our first holiday away (after her DH died) I didn’t realize how badly and I tried to sleep in the bath at The Waldorf Astoria in NYC!
After that, just beach holidays, where I manage the odd 10 minutes on a poolside sun bed - luckily I don’t need much sleep.
She asked if I could record her snores, which I did. She was mortified, as both she and her late DH were hard of hearing, so he’d never really complained, only mentioning it in passing. So, she sought medical advice, but just got a shrug from her GP.
She lives in Cheshire and holidays once a year with a group of ladies, but this year, no-one will share with her because of the noise. One of ladies prefers her own room, so I’ve told my S-in-L to do the same, as at 80, who knows how many holidays she has left.
but he wears it every night and gets a much better sleep ( as do I 
) 