There is just one tiny shop in terryglass, and two pubs. Either the shop of the pubs would have a card. You need it for the toilets there, but no units are used. The showers are excellent, the wheelchair on lasts longer, about 16 minutes. The shower uses 2 units for each use. If you need to empty the toilet cassette, pull up near the older toilet block when leaving and u can use these. There is also an area next to the old toilet block for recycling and rubbish. We go there alot, have been there for past two weekends.
Its a beautiful spot.