A large/multiple feet long sub ..

My sons birthday is this weekend and unfortunately an unexpected death has caused most of my family to be out of town all week & there is just no way I can prep all the food, decorate for the patty & clean the party space alone in time. We have decided to do some catering along with finger foods (deviled eggs, fruit platters, etc) such as a Chick-fil-A nugget tray and a large party sub! I wa looking online at prices and subway is SO expensive!! A 3foot long sub is $46! Does anybody know of anywhere else that does large subs? Unfortunately firehouse only does sub platters and I would have to buy many for the 20 or so people coming! Any help is really appreciated!!