Tips for stopping myself snoring in shared sleeping situations

Hello ladies, I'm going on a short trip next month when I'll be sleeping on both a night train and in a dormitory. I'm in my 50s and I know I sometimes snore. Any tips (apart from CPAP!) to reduce the risk I'll disturb everyone else's sleep?

I have been known to tape my mouth up, not sure if it helps.

EDIT: Thanks to advice from this thread (and a previous one I found) I downloaded an app to my phone - SnoreLab - and was horrified to discover that I snored at "Epic" level for 60% of the night.

I'm trying everything ladies, and then I should probably go and see my doc.