Proposing to my fiance, need advice.?

I personally wouldn't like that. I wouldn't want to be embarred and everyone to see my boyfriend to propose to me in an airport. An airport isn't a romantic place at all. And the music idea is a bit cheesy. No offense. And with the engraving for the ring, i would make it say maybe "(your name) & (her name) forever" And maybe a date you started dating her. Make it romantic and something she wont forget, and defiantly a surprise.