Here is what I tell all my patients to expect when I first fit them with a hearing aid (I treat everyone as if I was fitting my mother or my father).
1. I cannot give you back what god gave you, if I could I'd have a line out my door.
2. I cannot give you back normal hearing.
3. A hearing aid is exactly what the name implys, it's an aid.
Now the fitting process takes about an hour. This is where the audiologist will go over how to clean the HA and EM, change the battery, what batteries the HA uses and where to get them. How to manipulate the controls and make sure you can insert and remove the aid yourself. He/she should have the hearing aid already programmed before you get there (first fit), but should also hook you up to the computer to make sure your happy with the way it sounds. Any adjectives or descriptive words you can give him/her, the better they can adjust the hearing aid (tinny, hollow, echo,). Both for speech coming in, as well as your voice. If you simply say, "It just doesn't sound right", you could be there all day, because "It doesn't sound right" can mean an infinite number of things.
Every audiologist's fitting style is different. Some love to give you 3 programs, a volume control, ect. Today's hearings aid were really meant to be fit as automatic as possible, put it in your ear and go. Now with you mild hearing loss, that is exactly how I'd set it up. Let the HA do everything for you (some have auto t-coils that detect the FM system automatically). For someone with a severe to profound loss, they have likely worn hearing aids for so long that taking away their volume wheel is like removing their right leg.
I try to make it as easy on the patient as possible. If the patient does want multiple programs, I will add the 2nd or 3rd after two weeks. To start I simply want them focused on getting use to wearing the hearing aid day to day, not on when they have to hit a button and in which environment.
Basically, my best advice to you is be patient and have realistic expectations. If you have both, you'll do great.