I was planning on visiting Nuremberg next May largely to tour the WW 2 sites and the old city , but ran into hotel issues due to the Interzoo trade fair. I have been to the city previously and really enjoyed it and was bringing my adult daughter there to experience the history. Would a day trip from Regensburg seem reasonable or will the trade fair so impact the area as to make for traffic and touring issues. I realize this question may seem overreacting in a city as large as Nuremberg, but I couldn't believe how the hotels were all filled this far in advance. Thanks for the input from someone who is familiar with this type of event in town.