When I went to the U of C, I basically became an Opa addict. Delicious souvlaki on cushy pita is a hard habit to kick, and every so often I'd get a craving for their crispy seasoned calamari. So I was a little put off when I ventured through the Plus 15s to this Opa, only to find out that they didn't have Calamari at that location. The lady at the till glared at me and rolled her eyes like I was stupid, and then got mad when I took my time deciding what I was going to have considering my first option was not allowed. Sorry I didn't look at the menu, but I KNOW the menu (or thought I did) already!
I'll keep my habit to weekends and the pleasant service I've received at other locations. Opa is definitely worth some trouble, but in the future I'll go to the ones where they laugh and joke and appreciate their customers.