I think Kevin will be reading the napkin lyrics from the wedding singer at Rebecca's eulogy. The words sound very much like Jack waiting for Rebecca in the afterlife . . .
You shift unsteady in your seat, your sightline at the door
You sip your drink, deepen your breath -- who are you waiting for?
No, I would never leave you, lost on this uncharted ground
With just one glance I take my chance, and let us both be found