She looks incredible for 10.5 years old, you’ve done a great job!
I would also consider keeping her inside in a dog crate at night if it’s not too stressful on her. Also, chickens do just fine sleeping an the floor, my idiots do it every night ☹️, but she might miss her roost?
I have no idea...
My husband flies weekly for work and has not encountered any delays or cancellations this month.
This is a fact, not something I wish I could say. Your trip will be fine.