If you have noticed in most of Ray Bradbury's stories, he has similar things in them. It is like he has created his own world filled to the brim with his own fantabulous ingredients. For example, helicoptors appear as a form of transportation more than once. Do you see what I mean? Look into the world and see Ray staring back at you, eyes full of creation, imagination, he is a god to his little world that is not so little!

Exactly. Notice he almost NEVER uses brand names of current products, something Stephen King does all the time. The only ones I can name in Bradbury offhand are Quaker Oats, and certain makes of cars. Everything else is a discontinued product (Nehi Orange Soda) or invented one (seashell ear radio; Denham's Dandy Dentrifice being my particular favorite) to evoke the atmosphere of his own special world.

True ... but on the subject of repetition of story elements, don't you think there are too many of the later stories where the characters pour drinks and then start talking?

Yes, but you seem to be suggesting it's a negative thing (?). Artists repeat motifs all the time - look at Van Gogh, Frost, Shakespeare, Hitchcock, Charles Schultz ... etc.

Yeah, and there are too many of the early stories where the rocketship captain shoots a friendly alien, but that doesn't lessen the impact individually, only collectively.