Two or three people walking one person twice a day for 30 minutes is labour intensive. The trouble is that that is still not enough for some people within ACL 2.2. Additional sensory stimulation will probably be required to prevent the yelling.
Medical necessities have been limited to biological needs and the psychological needs to be upright and walking is not currently a part of the quality of care. The quality of care is being expanded to include the quality of life.