Good Luck at your Demo. My group where a bit the same, but once we got started interest increased. It was interesting to see the different reactions of the group, the husbands wanted to know all the engineering facts, specifications etc, and the wives just wanted to know how it would save them time. At the end of the night, my demonstrator had definitelt earned her keep and when she left, everyone got up and wanted to make something in the machine, from making orange juice to Baileys frothed milk for their coffees. It was a good night.
You will have lots of fun discovering what you can do with one little bench top machine - Enjoy