I'm friendly with my neighbours. I have gay neighbours and lesbian neighbours across the courtyard. They're probably my nicest neighbours.
I think that judgmental bias hinders friendships for most people. If you stop caring what other people do in their bedroom, everyone is much easier to get along with.
When heterosexual males have gay and lesbian neighbors, they are generally friendly with their neighbors. If they are outgoing enough, they will talk to them. None of this means that a friendship will form between the gay/lesbian person and the heterosexual male. I've rarely observed these friendships. I think these friendships don't form because there's often a lack of common interests.
All kinds of shops are great for picking up women. Women like shopping, so it's the easiest place to find women killing time browsing the vintage clothes store and the ecological supermarket. On top of that, most women either shop alone or with just a friend, not with whole groups, and it much easier to strike up a conversation with 1-2 women than with 4-5.
Yes, there are multiple retail options for pickup.
Mall game has been discussed a lot in the seduction space. I think mall game has been practiced less in recent years as compared to 10-20 years ago. All non-bar stranger approaching is a bit of a niche activity. The typical guy now is even less motivated to do mall game as compared to 10-20 years ago.
Online shopping has had an effect on the mall space more than the grocery store space. There are also home workouts on the internet in various forms but I don't think they've affected gyms as much as online shopping has affected malls.
Bookstores are an option. I like reading and books, so I like bookstore game.
A lot of non-bar approaching is well suited for a man going out in the real world alone with no wingman. Approaching groups of female strangers in a bar with no wingman is going to be more of a challenge. In non-bar approaching, it is more likely that a man alone can approach a woman alone in some setting.
In a non-bar setting, I would rather approach a woman who is alone than one who is with a friend.
In a non-bar setting, female groups of 2 are going to be more challenging than the solo female for a solo male. When a solo male approaches 2 women in any non-bar setting, he will likely be more interested in one woman than the other and/or have a better conversational connection with one of the women. The other woman will tend to be bored. As a result, she might block the interaction to some extent. Her impatience might shorten the conversation, not letting it develop long enough to end up in an asking out.
Another thing is that (grocery) shops are full of props you can use to open conversations. And actually, you don't have to go either direct or indirect. Unless you work in the store as an employee, women will realise that you're approaching them.
I tend to go more indirect in grocery stores and malls. Both indirect and direct can work in stores.
Going direct on streets, walking/hiking paths, or in parks is better than going direct in stores.
I use more indirect openers than direct openers.