I went to a week long retreat years ago. The focus wasn't necessarily on meditation but spirituality. Meditation was a big part of it but there were many other activities as well such as yoga, lectures, creative arts, etc. Changed my life spiritually. I'm PPS not SCI but I had little difficulty that I remember - have a plan and talk to the leadership about specifics before you go.
"I was curious. Since I'm not a cat, that's not dangerous."
- Greg House