Fen like Leia and still really doesn't know anything about Star Wars. Apparently there's a story Ben is in that other people know about -- that's the extent of her Star Wars knowledge. She has no idea about the naming conventions of their world, but she does refer to Ren as Ben around Leia. (She learned that last time.)
Eliot spent quite a bit of his time congratulating Margo on throwing such a wonderful party. There are lots of hands on her shoulders and arms throughout the night, and he frequently whispers conspiratorially in her ear with a trademark Eliot grin.