I've used Ryannair when travelling on my own and found them OK for the price but after 2 bad experiences of their disabled passenger assistance with my Mum, I could never in all conscience recommend them for anybody other than the able bodied who don't need to ask for any help at all. The general inefficiency we had prvisouly expereicned of their assistance service was bad enough, but having her reduced to tears by a cabin crew member who was trying to make us leave the plane before the assistance with the wheelchair had arrived (because they had forgotten to radio ahead and book it - yes, they only book it for your destination once they know you have boarded!) was an unforgivable, never again moment.
The man who did eventually come with the wheelchair to wheel her across the apron at Aberdeen and on to the taxi rank etc apologised profusely and was clearly upset himself at seeing my Mum so upset and even more so when he saw how distressed my Dad was with worry about why we hadn't arrived in the baggage hall until so long after him that he was the only person off our flight still waiting there and having security staff look at him suspiciously for loitering around. He explained that this happened all the time with Ryannair because they never booked the assistance in advance like every other airline at Aberdeen. In other words, they waited until you arrived at the airport and that chitty the check-in staff gave you to give to the cabin crew was to authorise them to radio ahead to book it at your destination after they were sure that you had boarded. All this to save having to pay for assistance for the occasional passenger who doesn't arrive at check-in in time or even more rarely the person who checked-in but didn't board.
I asked the man why wouldn't somebody who had checked-in not board the flight - that must surely be very rare? Once you'd checked in could the check-in staff not alert the assistance people at the other end? His reply was that it wasn't as rare as you'd think because sometimes they gave the departure airport assistance staff so little notice, they couldn't always find somebody who was free in good time to actually get somebody who for whatever reason didn't arrive at check-in very early, through security and to the gate in time and that Ryannair wouldn't hold a plane at the gate in those circumstances in case they missed their take-off slot.
So that was the last time, I ever used them - I've tried since then to find out whether they still use the same system to be met only with very cagey responses which speaks volumes. If they weren't prepared to tell me that the system has changed and what their system now is then that suggests that it hadn't changed at all with the result that I'm neither prepared to take the chance nor hand my money over to a company that can treat disabled passengers with such disdain as they did with my Mum. Complaining never even got me a reply acknowledging the complaint and as my Mum just wantd to forget the whole experience I let it drop and we've voted with our feet ever since.