A good modern mall called Parque Atlantico is within the city. The mall has a lot of clothes, accessories, and tech stores. If you want sports gear, the out this mall - you will probably find it here. Also plenty of restaurants. The humidity is often pleasant, and the mall is fun to browse.
Ponta Delgada does not have sand beaches within the actual city, but very close there are a few. Azores is not known particularly for beaches; but the ones that exist are fair enough. The sand is a bit coarse and black, since it is the product of grinding volcanic rock. Depending on winds the waves can be quite big, so especially with children it is very well advised to pay attention closely. Many beaches have one or two lifesavers with floating devices. In general the São Miguel island seems very safe and cozy places.
