I trekked all the way to this place from the Convention Center. I was a little unsure if I was headed to the right place, since Welcome Diner is located in a neighborhood, but I'm so glad that I found it. My food was delicious and the staff seemed genuinely friendly and interested in how I thought that the food was, which is always the sign of a good chef. I did have to wait a little bit, but I didn't mind too much, since it's a small establishment. People should be forewarned that there is very limited seating indoors and that most of the seating is outdoors on the patio. I personally thought that it was nice to sit outside, especially with the mural on painted on the fence/wall, but I understand that it might not be so comfortable to sit outside at the picnic tables in extremely hot Phoenix weather, especially if it was a busy day and you had to share a bench/table with a bunch of people you don't know.
I got a fried green tomato sandwich on sourdough with house-made corn salsa and arugula. It was fantastically delicious. The ingredients were fresh and everything from the toasting of the bread to the battering of the tomatoes was well-executed. Although the sandwich was filling and came with a slice of cantaloupe, I wish that it had come with some sort of side, like home-made potato chips, for the price. Alongside my sandwich, I had a tasty Four Peaks stout.