There is now information about Convention 2005 on the fraternity web site.
http://www.alphaxidelta.org/convention.asp
I'd be most happy to answer any questions about convention or Tucson. There are alot of thing to do/see here ... you just need to consider the heat when thinking about an outdoor activity.
Also, if you are considering a visit to the Grand Canyon... remember it is a 6-7 hour car trip there from Tucson and if you want to stay at the National Park, you probably need to make reservations as soon as possible.
Hope to see you there!