These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The athletic woman in R's fantasy sequence (the one he envisions as a "personal trainer") is played by Ayisha Issa, who is known in Quebec for playing the tough-as-nails inmate Bouba in the series Unité 9, and as Clara in the series 30 Vies.
Julie has lost her mother, boyfriend and several of her friends to the Zombie Apocalypse, her father is so obsessed with building his wall and protecting the rest of humanity that he's become emotionally detached from her, and the city she lives in is a desolate wasteland where she must regularly risk her life just to continue to survive. Somebody just give the poor girl a hug already!