Wikihow says how to properly order a Subway like this:Step 1: Decide before you approach the counter what type of bread, meat, and veggie you want. Do not wait until coming to the front of the line to begin deciding. If you are unsure, allow others to order first.
Step 2: Ask any questions you have before beginning the order process.
Step 3: Tell the staff the type of bread you would like (Italian, white, wheat, honey oat, Hearty Italian(sprinkled with cornmeal) or herbs and cheese) and if you would like a six inch or footlong. Keep in mind that if you are with a friend, you can buy a footlong sub and share it and still get more than enough to eat. Also available are flatbread and salads.
Step 4: Tell what type of sandwich you would like. If you don't know the exact name, the staff can help determine what you want. For example you don't know the name of it, but your friend had you try a sandwich with chicken and a sweet sauce. The staff can quickly tell that you want the chicken teriyaki.
Step 5: Add cheese if desired. Not all Subways carry the same kinds of cheese, and some cheeses look similar, so be specific. Do not just say the white cheese as almost all Subway cheese variates are white.
Step 6: Decide upon warming. Would you like you sandwich placed in the oven and toasted or microwaved,(Note, Subways in the UK no longer allow the microwaving of sandwiches,only the meats) Toasting a sandwich is a good idea if it is a wet sandwich like meatballs or with a hot meat like steak or chicken. Try cold cut subs hot for a different taste.
Step 7: Tell the worker what type of veggies you would like on your meal. Be specific a little lettuce or a lot of pickles.
Step 8: Order condiments: mayo, mustard, sweet onion sauce, etc. If you're not ordering off the menu, nothing is 'automatically' put on.
Step 9: Pay at the register the amount you are told. Unless the price seems very unreasonable, do not argue or comment about the price because it is preset by the computer. Unless a wrong item was rung up there is nothing a member of staff can do to change the price. However, if you wish to save money, avoid going for the combo deal. Also, you can ask for water and they will provide you with a free cup.
Step 10: Say Thank you
It also gives some "handy"tips on making sure your Subway experience is fulfilled to its capacityBe as polite as possible, for the happier the Subway employee is, the better crafted your sub will be.
If you go to the same store often, learn the employees' names and, if not busy, strike up a conversation with them. Friendly, repeat customers make everyone's day better, and if employees like you, they are more likely to bring specials and discounts to your attention.
If you think the employee did not put the proper amount of any item (especially meats or cheeses which cost extra), or if you think they are putting on too much, you should politely ask to see the chart that tells each Subway employee the standard quantities. This will better inform you for this and future orders.
Don't try to order while talking on your cell phone. This is extremely rude and will almost definitely lead to your sandwich being made incorrectly. Unless your ordering a sandwich for the person on the phone. They will gladly take the order.