There were many more positions than personnel to fill them.  We encountered an inexperienced clerk who tried to upsell us on everything imaginable.  If we hadn't been hip to the cons we'd have been totally ripped off by all the extra (unneeded) charges.  And yet, we got ripped off anyway by an outrageous fee imposed by Phoenix to pay for their new rental car palace.  Beware!  Rent off-site if you can.