Airships can have a casino and shopping. They just need to use lightweight materials for the fixtures. And if things cost a lot, the ticket price can be increased to match. Billionaires pay a lot of money just to say they’ve been to space, even if their capsule only just barely escaped earth’s atmosphere. I’m not claiming it’s practical or economical, but things being impractical and excessive hasn’t stopped people from making crazy bets on rich people shit before.