Tucson Marriott University Park: 880 E. Second St., Tucson AZ 85719. Phone: (520) 792-4100.
The Marriott is located one block north and one block west of the west entrance to the University of Arizona campus at University Blvd. & Park Ave.
McClelland Hall: 1130 E. Helen St., Tucson AZ 85721.
McClelland is located on the north side of Speedway Blvd., over half a mile west of Campbell Ave.; the entrance is one block to the north of Speedway, on Helen.
Here are walking directions between the Marriott and McClelland from Google Maps:
Self-parking at the Marriott is available at $13/day. The Main Gate Garage is right next to the Marriott and is free on weekends and $8/day on weekdays.
For the lectures, participants with cars may park in the Park Avenue Garage immediately to the west of McClelland Hall, at the corner of Park and Speedway. Its rates are the same as the Main Gate Garage.
The most convenient location for meals is the area around University Blvd. and Park Ave., near the Marriott. There are also some restaurants along Speedway Blvd.
Fourth Avenue and downtown can be easily reached by the new Sun Link Streetcar. The streetcar picks up on Second St. on campus and on University Blvd. just south of the Marriott. You can take it west and then south down Fourth Ave. to downtown Tucson, which has many nice restaurants. For a map, see here.