I've lost track of the number of kids' birthday parties that we've had or our daughter has been to in Beckenham or the O2.
Telling other parents that you're taking the kids to PX (or Nandos, or Zizzi, or Strada, or Frankie & Bennie's) will always get the thumbs up whereas saying you're taking them to one of SE23's excellent pubs before the cinema doesn't always go down quite so well especially if the parents aren't from the SE23 area.
Besides - if PX is good enough for Dulwich Village it's good enough for SE23, no? I think their planning permission bars them from doing take-aways which at least reduces the street litter.
And there's not even the threat of Dominos-style motorbikes.