Have they finished rebuilding the city centre? Last time we were thereit was a demolition site and Arndale was run down and decrepid with only about 50% occupancy.
Cardiff is a much nicer city centre.
Then the stadium itself. Asides from a good track it has nothing to reccommend it for large international events: the catering and hosptiality are not sufficient to handle anything more that a league match crowd and it's miles out in the middle of suburbia with virtually no hospitalitynearby so one needs to get back to the city centre and there is only an evening bus service that is incapable of handling a full capacity crowd.