Just saw your bags in the pictures forum. You may be a new quilter, but it looks like you are an experienced sewer. I agree with the other posters. Go back and ask for more details to find if it's actually a class or just a 'free sew' where you work on whatever you want. Usually other attendees are pretty helpful. You can get a sewing machine case at JoAnns, or go to a dept store and get a duffle bag, which you will need to pad with something (like your fabric!). Here's a retreat checklist, and remember that you need to label EVERYTHING with your name, including your power cord, sewing machine, and foot pedal.
http://www.quiltingboard.com/main-f1...t-t159578.html