I heard this a couple of years back at a session in the Bedford at Sidmouth and have used it ever since:-

Kind friends and companions, come join me in rhyme
And lift up your voices, in chorus with mine
Let's sing and be merry, all grief to refrain
For we may and might never, all meet here again

Chorus
And here's a health to the company, and to my lass
Let's drink and be merry, all out of one glass
Let's drink and be merry, all grief to refrain
For we may and might never, all meet here again

Here's a health to the true lass, that I love so well
Her smile and her beauty, sure none can excel
She smiles on my countenance, sits on my knee
Sure there's no-one in Erin, as happy as we

Chorus

Our ship lies at harbour, she's ready to dock
I hope she's safe landed, without any shock
If ever I see you, by land or by sea
I will always remember your kindness to me

Chorus

For we may and might never, all meet here again

It seems to sum up an evening, or a few days of friends gathering and singing together.