I just don't get involved in wheelchair requests anymore, we are not allowed to make company radio calls or PA's once we have left cruise altitude anyway. It's normally on the telex/pbi to the destination and if it's not then we will sort it once we get there. To be honest it's one of those things I always felt was "not my department" in the first place and the rule about company RT in the descent gave us the perfect excuse to stop worrying about it.