If Jon lives in Lakeway, I will eat all seven of my cowboy hats.
Anyway.
The Saint June is where the X is, the red circle is around the Starbucks she favors (and the one across the street at the Randall’s grocery store, but she goes to the one on the left/East side of the road. The location with the little cup on it is of course the closest one to her home.
The Starbucks closest to her has the following amenities:

Her favorite location has the same amenities:
On her way to Lakeway is the Target Starbucks without the order-ahead option, and the Randall’s across from her favorite does not have drive through.
So yes, it’s clear she only goes to places where they have drive-through, and she can order ahead.
Driving in Austin is bullshit, if you miss an exit off the freeway, you might have to go 6 miles out of your way to circle back and get where you were originally supposed to be, it’s fucking bananas. So even if you see something 5 miles away, the place 7 or 8 miles away might just be easier to get to and deal with. There are parts of the road down in Anna’s area where you drive on the
left side, and if you’re not expecting it, or distracted because of TikTok or some shit, it can be scary, and if you already know it’s on the way, it will cause you to just go the other direction, even if that means a longer trip.
I will be honest with you. If I lived at the Saint June, and I just
had to go to Starbucks every single day, I would rather drive a few extra peaceful miles than deal with this nonsense:
That’s gonna be a lot of weird turns and opportunities to get hit by some dumb rich teenager, when you could just do this at a protected light, and then leave in a dedicated exit lane:
I don’t know if there’s another reason that Anna came up with, but if I also needed to order ahead and not leave my vehicle, I would probably make a similar decision.