In reply to Stob Dearg:
My assumption was that you park there and pay for several days, but RingGo appears not to allow* that, and you'll not have a signal on the mountain to pay for another day at midnight (unless things have changed since I last went) so I guess that car park is no longer available for the CIC or for wild campers.
I do wish people would use a bit of brain setting these things up. The public car park opposite Snowdon Ranger hostel is the same, despite people staying at the hostel wanting to park there as the hostel only has about 5 spaces.
* It can definitely *do* that as it offers multi day stays at railway stations, so whoever set it up has done so for one day max.
Post edited at 09:41