We all go through times in which we expect certain things from our day to go smoothly. When it doesn’t happen and you find that you’ve been disappointed, it can lead to disappointment when it comes to interpreting what your dreams about deliveries usually mean.
Many dreams have an element where the protagonist receives something dreamt about. Dreams can often be interpreted to show the person’s subconscious; in some cases their true desires.
I think that the most common interpretation for a dream about expecting gifts is an expectation of something good to come one’s way. Dreams about expecting deliveries suggest that a shipment is arriving soon, very soon. I suspect that this has feelings of relief and gratitude because not only are you getting your goods you had ordered, but they’re also on time.