@PotomacBobTypically, I use brand names. In my opinion they may (Should) offer insights to characters. For example, in a story I have a character who is contemplating getting out of the US Marine Corps; in particular he is inheriting a ranch (without cattle or horses) in Colorado, as well as other investments.
His uncle, a well-connected lawyer sends him to a particular men's suit maker shop in Denver, with a reputation for a style more suited to younger (30's) men, but not favored by the more staid older (50's+) Ranchers and "Old Money" of Denver. The uncle is making a calculation about whom his nephew should influence. I also named several restaurants and clubs trendy at the time. I don't know how many people who might read this story would be aware of these matters, but it set a tone for me as a writer. Plot points were highlighted, if to no one else, to me, by using these particular named establishments.
So too, "Name Brands" if not "Coke"/Coca-Cola, the RC, or Jolt cola, often infer things about a character who chooses them. Brooks Brothers suits, or a bespoke suit from Saville Row, better yet a particular tailor. Ford or Chevy, or a Range Rover, or a Mercedes, likely indicate certain things about a character. You take a risk that a reader might have a negative association about a Brand, that you didn't intend.
Back in the 1990's when I started writing (but did NOT post online) I was cautious about naming particular strip clubs, or other locations (especially "notorious" locations) because I was concerned that people might wonder how I knew of them. Now many strip clubs have a website. Google and other tools can allow a reader or writer to learn about details of locations; sometimes even what they were like in the past.
For example, as a young paratrooper I spent time down on Hay Street, in "FayetteNam" (Fayetteville, NC; near Fort Bragg). Now by the early 1980's it wasn't quite as rowdy as it had been even a few years earlier... but Rick's cabaret, or the Night Owl,,,
There are notorious dives in Tampa, near MacDill AFB, or Lakewood, near Tacoma, and Fort Lewis, and other bases.