Convincing Management to Migrate to WiFi?

bergeron76 asks: "My company is currently preparing to relocate to a new location out in the suburbs. We recently received a very outrageous quote to move our computers, telephony gear, and ethernet wiring to our new office. I'm trying to convince management to switch our call-center to WiFi for a fraction of the "relocation" quote cost. The problem is that they are still considering outsourcing the ethernet wiring at an exorbitant rate! Can the Slashdot crowd help me come up with more selling points for WiFi (beyond the obvious) before I make my formal proposal?"