You will receive a needs list.dont forget foot pedal as wll as power lead. I go to classes on my own and have no problem mixing,. Quilters are friendly people and will always chat.
I always look on a class or workshop etc as a learning a new technique.if I end up with blue fabrics and wish I had taken the purple I don't worry. On the project you are making you will learn new techniques and fudges when you get home you can use the purple and make no mistakes and if you do you know the answer.
I ever look for the project to be perfect because listening and sewing and remembering miss.
What ever happens have fun.