Hey everybody, I am new to FT and this is my first post; so be gentle, ok?

My wife and I have been trying to get my father to come to Asia with us to see my in-laws (my wife is from Taipei) but he has always put it off. Well the other day my mom let us know (to make sure we didn't interpret this incorrectly) that since he is quite large, he fears that if he has to (I am just going to be honest here) defacate, he is worried he won't be able to clean himself properly in the shoebox that is the typical bathroom on a 10+ hour flight.

My question is which airplanes/airlines have large bathrooms? Are the bathrooms in first class bigger because I am not oppossed to paying for him to fly first class and have him relax and feel secure.


Any and all help would be appreciated because I don't think we can wait much longer for him to make this trip.