Visiting
Walk in, either shop
Hatch is counter service at Glasthule and Blackrock. There is no booking system.
Order at the counter and take it away, or find a seat if there's room. Glasthule has a few stools and benches on the footpath; Blackrock welcomes dogs inside.
Neither shop publishes a phone number. Email is the only contact either one lists.
Booking opens the provider's own site, which has its own privacy policy.