So I’ve just returned from Oaxaca. I have a few notes about the experience:

• The only difference was they had a little piece of fabric on the center seat saying “this space reserved for you” with arrows pointing to the aisle and window. I actually prefer this to having some weird tray thing since it means you can raise the armrest and spread out.
• We were offered a cup water as a pre-departure beverage
• The included snacks and drink was a soda/water/juice and a bag of chips or cookies or similar
• Boarding groups have changed and now Premium+ boards first in group 1

Considering the small cost increase from picking a normal seat vs this, I can’t throw my money fast enough at them. It’s gonna be really hard to pick Aeromexico with a connection through MEX if a direct option in Premium+ is available, especially if it’s cheaper.