MantaLady, did everyone in the group start at the same time as you? It might be that they do this in the begining in order to get a sense of what your drivers or triggers are. I would give it a couple of days and if they continue to ask you to speak in front of numbers of people and you are still uncomfortable then let them know. Knowing what to say and "coming up with the right phrases about recovery" might mean they are repeat rehab'ers. It does not mean they are more likely to succeed than you. I'm glad it seems OK otherwise
I had booked a few days off of work (to go to Le Mans for the 24hour motor race) I had a couple of awkward phonecalls with my boss to get them counted as sick days, he has agreed to do so but given me some research to do at home (he'll be lucky, the World Cup starts tomorrow)