Flew AEP-MVD earlier today. They delink kids from the reservation - so couldn't check mine in (and select seats). They weren't very firm with luggage weight (most of our bags were a few KGs over). But - flight was delayed 2 hrs (and AR left on time!) - supposedly due to Argentine ATC (believe this happens more often). Flight good, short and with very limited service. Arrival in MVD a breeze.
FYI - many flights to PDP seem to have been canceled the past few days. I suppose they bus people via MVD so not a huge deal (adds 1.5 hrs to your trip).