Earplugs... Always travel with earplugs... Although, I never travel with guns!

Anyway, I travel quite a lot for work... And I find hotels pretty much never observe the do not disturb sign. They c knock and ask if they can come back later... Or just come straight in... It is annoying as anything, as often in tired or just lagged and I want to be left alone (subtle hint on the sign...).

I had an interesting experience once in the middle of France... A colleague and I had arrived at the late check in... And the was only one key. Apparently someone else had taken the other key... But we were trying to explain that to the night staff... But due to the lack of a common language... She thought that there was no problem as she thought that we could sleep together...