When I performed in a half dozen memory care locations in Maryland, I always insisted that no less then 2 attendants must be in the room at all times, one in the back and one in the front near me. Saved me a lot of grief!
Once, at an Alzheimer's Center where I performed every other week, they decided to have a meeting, and left me alone with 75 Alzheimer's patients in various stages of the disease. I instantly stopped playing and announced on the PA that the music would begin as soon as 2 attendants came back to the room. The facility director came into the large room and asked why I was not playing and singing. I explained the many potential problems that I could not cope with without 2 attendants. He immediately left the room and two young girls quickly entered and apologized for leaving me alone with the patients. It never happened again.
When I was still working, I was required to carry $1-million in liability insurance, which cost me about $1,000 a year. It was well worth the expense. I had several nite club jobs back then as well as the NH circuit, and believe it of not, the nite clubs and restaurants were the problem places. Everyone that requested a song wanted to lean on my equipment, usually the Bose sound column as if it were a leaning post. I eventually solved that problem by creating a sign on the PC that said "DANGER - HIGH WATTAGE". The sign was black with blazing, bold, red and yellow letters. I placed one on each side of the Bose tower at eye level. Problem solved.
At some locations where folks constantly wanted to lean on my keyboard or console, I went to the expense of purchasing a theater barrier, which consisted of 4 brass poles and velvet covered plastic chains. This stopped 99 percent of the intruders, but there was always at least one person a night that would work their way around the barrier so they could whisper in my ear while I was playing and singing. I always found that amazing in that despite the fact they could see me singing and playing, they still fully expected my to hold a conversation with them. The best and most economical thing I ever did was get out of the restaurant and bar entertainment biz and go with the NH circuit. Better hours, better audiences, better pay, less hassles and no drunks to put up with.
All the best,
Gary