In Act Two, Robbie tells Ellen how he feels.
Robbie: Dad works hard, and he works late. You work hard on all your committees, and you work late.
Robbie wants his parents to spend some time together.
Robbie: I think you ought to take a vacation away from the family — alone.
But Ellen knows that she and Philip are too busy to take a vacation. So Robbie tries again.
Robbie: I think I have an idea.
What is Robbie's idea?