I thought it might be polite to provide feedback after our stay.
No problems whatsoever staying at Bumble Hole, opposite the visitor centre (which closed the moment we arrived and reopened the moment we left). No sign of its recent occupation by unwanted visitors.
Only 2 comments to make:
* The geese do leave an awful lot of partially digested grass about the place
* The Old Swan (Ma Pardoe's) doesn't allow anyone under 16 through the door [that's their prerogative, it's just a shame they have no website that might enlighten you before you visit] - so we had some takeaway beer instead.
Our stay outside the Samson & Lion was also a success, with no problems. It's no gastro pub, but the welcome was friendly; the beer was good; and the bar snacks ridiculously good value - the four of us ate for £10!
Any idea who the helpful chap at the Delph 9 is? He was pleased to see us proceeded to set the locks for us.