South facility attempted multiple times to charge my DA40 (small single engine) $200 for facility fee with a waived fuel amount of 75 gallons. I do not have a 75 gallon capacity, and resolving that took hours before I could get back on the road.

Go to the north facility if you park here. $37 per night single engine piston. $30 handling $10 convenience fee.

Flew into Modern Aviation South at KISP recently for Pilots and Paws mission, to pickup a pup to fly them to their furever home. Friendly customer service rep and marshaler. I called ahead to confirm fees and if they could be waived. Took a day to get a confirmed answer but they were agreeable - thanks! Light staffing but helpful service for the quick turn. I would go into Modern Aviation South again, hoping for another good experience.