In operating terms it can't have been much different from Rio Gallegos or (over the border) Punta Arenas.
Given that the Argentinian's were always ready for a war with Chile over the Beagle Channel I'd bet it was pretty well known and equipped for operations. Yes the logistics tail was long but operating would be challenging rather than "harsh" - a diversion is the main issue - pretty much the same +220kms to PA or RG