I booked for a trip that I was going to be with 2 others. I could not go and I called MS asking to convert their 2 tickets to the full price rate. MS said it was unnecessary for family staying in a room on your points with linked Magic bands. I did worry about it and even called twice and got the same response from another MS rep. The paid events work this way. They said the free member magic is a different case and I would have to be present.
They had no issue attending without me.