I don’t think it will really matter but at Kroger or Walmart I know they can give you trouble if not every person is 21 so just curious if anyone’s had an experience like this
No issues at all as long as you’re the only one drinking.
As long as she isn’t drinking your alcohol/cocktails, it’s fine.
I remember this happened when my ex husband was newly 21 and I was still 20. Kroger and Walmart were annoying because by certain state laws ( depends which employee wants to follow it) everyone at the time of purchase needs to show an ID because they assume they are drinking too (which I was 
) so my husband and I just learned I needed to stay in the car and they wouldn’t know the difference. Restaurants were not the same though. You’ll be fine at Disney.
Kroger & Walmart are messing with you.