I recently heard Cathie Ryan sing this (with Cherish the Ladies) at the Milwaukee Irish Fest. I believe the following would work:

(G)So here's to (Em)you, and our (C)time toge(G)ther.
I will share with (Em)you a (Am7)parting (D)glass,
And (G)bid a(Em)dieu with some (C)smile and laugh(G)ter,
Our time (Em)apart will be (Am7)short, and (G)pass.

Pretty long since Elizabeth's posting, but perhaps this will help. When Cathie performed it, it was done pretty "airy" without a definite tempo,

Michael