When I worked with "high income families" I found that consistency in staff and positive staff attitudes were VERY important, as many of the families have parents who travel for work and the kids depend on you to be their consistent, trusted adults. Also, the kids really appreciated unique activities and long-term projects that they could sink their teeth into and build relationships in the process (i.e. research and build a movie set for x time in x country). We always tried to set up activities that they wouldn't get inside the regular school day or at home. I suspect your kids will not even miss the Friday movies.