We only went to Shrewsbury once (for the Monday), Whitby leaves us all folked out.
But I remember that there was a session on the programme that we looked for and had difficulty finding cos 2 pubs have the same name.

The programmed sessions at Whitby are useful not so much for the leader provided but for the fact that you can be sure there will be people in that pub at that time. (And you might have a clue if you know who is leading it or the programme gives a hint, what kind of music might be played).