Hi Can I be so bold to suggest the 22nd November (I work shifts and can request the day off if I have enough notice!)
The Ottakers you mention Sara is now Waterstones (I think!)and although it might be a bit busy we can always decant to somewhere else if we cant sit down. Truro is now awash with coffee franchises so it shouldnt be too hard. Alternatively there are a couple of pubs near Truro which would ease parking and avoid entering the city depending of course which way you are coming from. Victoria Inn at Threemilestone (3miles from city!) or Chiverton arms just off A30 on the road to St Agnes (about 5 miles north of Truro).

Maryxx