It is a good investment, if you take advantage of everything offered.
Look into all the NMRT events. Take advantage of the Resume Review. Have copies of resumes with you to hand out. Talk to vendors as they know everything - who is hiring, who to work for, libraries struggling, etc.
Talk to as many people as you can before you go to see what specific events they recommend.
Brian C. Gray
Head of Reference & Engineering Librarian
Kelvin Smith Library
Case Western Reserve University
http://blog.case.edu/bcg8bcg8@case.edu