I am rather particular when it comes to a brick and mortar shopping experience. Specifically, I like for someone in the store to acknowledge that I am there and to ask me if they can help me with anything while I am there. This is the case even if I know exactly what I want to buy. I once went into a store, knowing exactly what I wanted to buy and walked around the store looking at things, all the time noticing that the store employee was just standing there doing what looked like absolutely nothing. At no point did he even give me a head nod. I would have happily taken my purchases in a sack or a bag if he had even tried a simple hello, but this was not to be.