Bloggs,
even in 1st and business you still need to get up to go to the loo, unless something has changed in the last month where the CC bring the necessary items or the seats are now so advanced that you can go in your seat.
also you might want something from the overhead locker, etc etc try proving that this wasn't the case. no hope.
so unless Q want to employ double the CC and supply all pax with private seats that include a loo, then pax will have to move around in the cabin.
the pax can in no way be responsible for poor aircraft design, which is what this is. that's why airbus and northrop are paying, not qantas.