I fly NCL - AMS - LAX several times a year and although it is usually in Y, I smile sweetly at Check-in and ask if they would do me a favour and attach a Priority tag to my luggage even though on this occasion I will be travelling economy. I then explain that in the last 5 trips my luggage had been lost twice and I believe a tag will help prevent a repeat. Worked every time so far,luggage has only actually gone astray once in the last 12 trips!
Family motto.."If ya ain't cheatin'..ya ain't tryin'.
Exraf