This kind of thinking may get you into trouble down the line. In this case, you are not a paying customer. The bank makes no money off this transaction, as you are merely trading an equal amount of paper money for coins. In fact, the bank loses money as they had to pay to have the coins shipped in as well as pay the teller(s) a wage to handle your transaction. It really is a miracle that we are able to CRH with no fees most of the time. You are never entitled to free service from anyone, including banks. Anytime you receive free service, you should feel thankful, not entitled. Also, turning an order bank into a dump bank for not providing you with services that you feel you deserve isn't necessarliy a good idea either. Banks can close your account, refuse to sell you coin, refuse to take your dumped coin and show you the door anytime they wish...for any (or no) reason whatsoever. To succeed in this hobby long-term, you'll have to learn how to balance keeping your banks/tellers happy with doing the volume that you would like to do...and every bank and teller are different. I have a dump bank that would allow me to dump $10,000+ weekly and it wouldn't ever be a problem. Another bank cut me off after doing about $500 a week for a couple of months, and so there would be no surprises, I was even kind enough to get prior approval from the manager to do up to $1000 weekly before beginning. They're all different, and you'll have to learn about and treat each one differently. Even then, you still may lose a few along the way.
As for the issue with your stepfather, that is between the two of you. My advice would be to talk to the bank with your stepfather present. If they say that the 2 boxes you wish to order is fine with them, then hopefully it will be fine with your stepfather as well. If not, then just do what you can when you can.