Tigger2K8
Yes I appreciate the advantages of alternative transport on the mainland compared with NI, but I'm not so sure that a strong enough case could be made for lower ADT if based mainly on the need to visit friends and relations. I'm sure that the ADT at £12 (each way) would not stop most people from visiting relations although obviously it may be a factor if visiting many times per year.
I am no supporter of the ADT and all I am saying is that I find it difficult to understand why NI should be treated differently to the mainland with reference to Domestic flights. I do however have an open mind on this and I'm willing to be convinced otherwise.