Santa Teresa is both a national park and a nature reserve, and the visitor services are built around people staying the day rather than passing through. There are picnic and camping areas with barbecues and pergolas, and the park says these are designed with accessibility in mind, though it gives no detail beyond that general statement. Food is sorted on site: supermarkets, kiosks and bakeries stock what you forgot to pack, and some of it comes from local producers.
The toilet blocks include family modules and hot showers, which matters after a day outdoors with small children. Arriving without a car also works: transfers are coordinated for visitors coming in on long-distance buses. If you drive, parking is regulated, but where it is and what it costs are not stated.