Sizing?
I think cabin changing option would only be done if you (or you and partner) are the only pax in F - and even then still may feel odd?
Or if you are a young child...which brings up my question...are the F PJ's 3 sizes fit all (S-M-L) and to what extent is the S actually S (will it swamp children and/or teens?). If they are unisex PJ's (don't know) - then is the S usually plenty for most of the fairer gender pax?
G.