That's a lot to unpack (pun intended). Flying in the front of the plane on a long haul flight certainly has plenty of comforts (seats, legroom, meals, beverages, attention from the crew) but could Ivana also have meant that not having money means being subjected to the unwashed hot polloi? <shudder>
Ivanka said that once when she was a teenager, her mother made her fly coach to Europe, just so she'd understand why it was important to have money.