What a crazy place (in a good way)! From order to payment, things move along quickly, so pay attention - especially if it's busy. I learned on the fly and did okay.
The regular sub is more than filling. You get to watch them slice the meat as they prepare your sub - no prepacked Oscar Meyer meat slices here... And there's plenty of it! Lots of content to these subs, so come hungry! Speaking of "plenty", let's talk about flavor. The italian sub I got was rich in flavor. I seemed to be able to pick out the taste of each meat on the sub (read: The spicy stuff didn't wash out the bland stuff...).
The staff were high-energy and willing to help you, even suggesting which subs are widely accepted as "the best". They encourage "the juices" (olive oil, seasoning, dressing), as that's how Jersey Mike likes it.
I'll go here again (and again...) If I can find a coupon, I'll hurry back! It's a little pricier than other sub shops (not by much), but you get plenty for what you pay for.