VERY Nice pic Mark!! LOVE it !!
Did you take the bird with you to get the drinks?
I have three that go out and about, and I have two that really don't like going out of their comfort zone. (They tend to get spooked and fly off in unfamiliar surroundings. Those birds still get outside, but in the tree in my yard, where they feel safe.)
Both my macaws, and my Red Lored amazon are my out and about birds. Those three pretty much always want to come, and If I am going someplace where I can take them, I usually take one of them.
Maggie, even fully flighted (and she is now - but she's recalled!), I can just set her down on the back of a chair, and go in and get my coffee. Come out, and she's right where I left her.
Last night, she went to the laundrymat with me. I just toss her portable playstand in the back of the car, and she stays put on it. While I start the load, and fold clothes. The rest of the time it's her one on one time/play time with me. (And laundry is much less boring that way.)
That is the benefit of startle training, stay put training, and out and about training. I can do stuff like that safely... (Disclaimer: Do the work! If they aren't startle trained, chances are sooner or later you will lose your bird.)