"Do" on the 13th

Grateful if I could have some idea of numbers for the Black Horse.

For those not familiar with the format, this is a quartly event, intended to celebrate the solstices and the equinoxes (Is there a more elegant plural of this? Perhaps not, box becomes boxes). We meet for an informal meal and drinks. Any time from 7:30 p.m (earlier if you want). Bring who you want and eat when you want (or just drink).

The Black Horse, situated at Limbrick on Long Lane, Chorley, is the unlucky hostelry on this occasion. PR6 9EE for satnavvers.