Slightly unrelated, but early in my career I brushed off those tours as not really useful for my developer job. Mostly because I got indoctrinated by my computer science profs that it's all data flow in the end. Don't concentrate on what's behind. Even though I still think it is to some extend true to remind yourself to abstract away the meaning for the business, the real reason for those tours are so different: They are memories for life. This is how you become a fully formed human in our society. One of the perks of being a tech consultant was really to get to know so many different life worlds of people working in different sectors.