Aziraphale enjoys coming to the park, getting some air and relaxing for a bit. It's not that he doesn't like his bookshop, he adores it, but it's nice to go outside every once in a while. There's also an advantage that comes with with going to the park, he gets to see them.

"it's lovely to see you, I was concerned you had vanished from the face of earth and didn't warn me!”

Aziraphale smiles as he sits down on the bench they were already occupying, it had been long since they chatted