Definitely a brighter outlook depicting people as well off and able send and receive extravagant gifts. Also elegant settings, clean, beautiful, stylish clothing.
I think these upbeat themes run through the musicals of this era even when the setting may be more common. The people are represented as happy and "singing through" theirs troubles.
Pre-code it is likely Anna's costume would have been more revealing and the dressing room scene would probably have shown her undressing down to silky lingerie. (She's French for heaven's sake!)