First post here. I'm accompanying my father-in-law YVR-MPX this summer. He's in First, and I'm at the back of the bus. He is 80, lost his wife in the past year and has (mild) dementia. I like to visit him a couple of times during the flight. How impenetrable is that curtain? What would be the best way in your opinion to approach this? I'm just looking for visiting privileges.