Very cool. When my daughter was in grade school we would always take a couple of our games to the school fall carnival/dance to help the PTA raise money. They sold tickets for the kids to play games and buy food -- so we collected two ticket for a game. The kids went crazy for pinball and like you said, some had never seen an actual machine before. It was a huge amount of fun watching the kids hover over the playfield to see what was going on while someone was playing a game
The second year we brought games some kids actually showed up just to play the games. I remember talking to one parent who was shocked (and very happy) her son wanted to go to the dance -- until she asked him why he wanted to go and he said "To play pinball!" LOL!