Accreditation does not mean that camps must look alike in any way.
Accredited camps can range from the most rustic and primitive to the most luxurious.
The standards do, however, cover some basic facility requirements. See the SF section of the standards. My child attends a day camp at a public park. The camp is visited while the day camp is in session. The program, leadership, and facilities are evaluated by the same standards as a camp on its own site.