Did them being rich help or hinder this story?
Movies are about struggle and conflict, and them having lots of money, nice beach houses, expensive tastes etc made it sorta less engaging. Don't get me wrong, I liked their lifestyle, but storytelling is about people who are in conflict with their world.
Their money made things a lot more "comfortable". Cellphones to leave reminders. Expensive doctors. Maids. Imacs to leave death messages/communicate with child.
I felt like I wanted some subplot about the money... maybe he's about to go bust and needs her to keep working. Maybe they want the daughter to give up on acting and help out, like the others are secretly doing (perhaps).
It could have been used as a device to talk about the fact that even "rich people" live paycheck to paycheck and being destitute is often only an illness away.