Ian – Being 6’7″ I can really empathise. Wrt back issues a really beneficial tip I was given was to replace your mattress every 3-5 years. The avg lifespan is 8-12 years. The Relyon Ultima “firm” was excellent for me.
As to rants
– showers without any height adjustment option or separate hand held option. Also I have no problem helping a “vertically challenged” person put a case into an overhead locker however when said case weighs 20kg plus and needs a bench press it is a bit much. Similarly beds with footboards.
– On SH, in the old days, over wing exit seats could not be booked/secured until the check-in person had ascertained you could physically assist (or at least not obstruct) with an emergency if necessary – so it was usually fairly easy to secure one. Now many more avg people with no real need, take the seats.
– Crew who fail to reverse meal serving order so one could end up not getting a first choice main on any meals service.