First of all, is it Isshinryu, or Isshin-Ryu?

Ok anyways, I just got a membership at the YMCA at my house, but didnt want to sign up because I thought it was generic, McDojo-esque karate, but I looked at the guide and it said it was IsshinRyu. I started thinking that it might not be too bad, so I asked about it and the lady said that it was a seperate company that trained people. It is 2 days a week for 1 hour a day, and I will be in the adult class. I saw one of the adult classes, and there were people WAY older than me. Which normally wouldent bother me, but there isnt anyone my age, so I wouldent have anybody to train or spar with outside of class. What are your thoughts on this class?