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How do i stop my friend from snoring? we're going on holiday together! :/? - stop snoring uk

I do not want to sound selfish or anything, but my friend has a snoring problem so terrible. Ronca everything is there, and when you awaken, as they told me that if you snore, your snoring is again once you fall alseep! There are 3 of us go on vacation, and we're sharin a hotel room. Are there any quick solutions to help to stop it. Please do not say sleep clinic or something that we do not wait long for our vacation.
Any product that knows the United Kingdom? Or just general advice? We want to help you thank you! :-)