I know exactly how you feel, I did that a few years ago when I went to a retreat. Luckily one of the other members who was sharing a table with us always carried a spare machine with her so she offered to let me use it. I was so happy but nervous at the same time as I had never sewn on a Bernnia before and I hardly knew the lady. I was in love with her machine instantly but she was not interested in selling it but I had a great time using it .