Ok, I just found two little nuggets of useful information if you ever need to rent a Mac system in the Twin Cites. FirstTech does not do rentals, but they graciously pointed me to the following two places:
ASAP Computer Rental
952-882-9962
First Choice Computer Rental
952-975-9926
ASAP appears to be a bit cheaper ($95 for a weekend laptop rental -vs- $150) if you go and pick up the machine directly. Actually, for $150 they both deliver.