There is so much symbolism in the term, "Land of Fire." First there are actually flames shooting out of the mountains because there is so much natural gas. Then, fire is the center of the Zoroastrian religion that predated Islam. Many celebrations actually date back to the Zoroastrian times. If you see roses, that is another Zoroastrian symbol.
When you go to Fountains Square, walk to the part that would be closest to Old Town and head down the hill on one of the narrow streets at the end. You will finally see on your left a small sign that says Super Market. GO IN! In your life you will not see another like it. If you cannot find it, just ask a local. It is fairly new but people all know about it even if they cannot afford it. There is actually a stuffed bear in the wine cellar.
You can see why we felt like we should go back as we missed the outskirts of the city.
Really, you do not need anyone but Nahid at the consulate in Los Angeles. I do not know anyone who has used the embassy's org. My friends who went had their visas taken care of by their tour company. These visas are expensive enough at $160. Whatever Nahid tells you to do will be right and he will take care of you. He will also tell you when to send in your docs.