Here is another of my experiences.
Two days before I flew back to Bangkok I went to the Emirates desk at Glasgow airport. I told the lady about having to go through the security two times and was frightened I may miss my plane and there was only one and a half hours layover in Dubai.
She said to me to ask for wheelchair assistance when I check in and they would arrange to meet me at the plane in Dubai. I told her I was perfectly fit and could walk for miles, she told me it doesn't matter, so that is what I did.
At Dubai I was wheeled from one plane on to security and then the train, the straight through and on to the plane. Great service.
I was going to put this on the forum but there are far too many <deleted> among the posters and knowing myself, I would just retaliate and get banned.
So from now on it's Emirates for me.