Terminal 1 does have a bunch of spots marked EV charging/parking only with 110V outlets you can plug your mobile connector into. There are 2 of these per parking level from what I could tell. There are also other places with 110v plugs and non marked EV spots on each level. I noticed them a few times and the last work trip I made a few weeks ago I tried using them. I had mixed results....
Many of the plugs were not active, but eventually I found one that was on (was not in a marked EV charging spot, but plug was in the same location as other spots marked). I used a trick from my old days when I used to charge my volt in the wild on 110V: loop the charge cable through the tire rim and padlock it so it can't be stolen without cutting straight through the cable.
I arrived with around 120km of range and fully charged over the next 3 days while on the work trip. It was kind of hilarious to watch it charge that slowly. Overall it worked well, but to be honest they should really have more dedicated spaces and outlets that are working.
Still, if you are flying terminal 1 and want to give it a try, just hunt around for them. They exist, and when I returned to my car I even checked all the Sentry mode footage and no one messed with the charger at all.
The main reason I liked this is because it let me leave Sentry mode running. Without being plugged in Sentry mode would have drained 50km/day or more, and it shuts off automatically at 100km of range. That means even if you show up fully charged (in a LR model 3 like mine) when you aren't plugged in you have about 1 week with Sentry mode on...less if you have a SR+.
Parking long term at an airport is the perfect use case for Sentry mode....but not having a way to plug in is counter productive to its use....