The Buc-ees here ( which should be no different from anywhere else) have both their house brand and Coke brand, they're just not at the same dispenser.Forgot to mention, in my visit to the Buc-ees in Auburn Alabama, which opened early this year, the restroom entrance I was complaining about is about 6 ft 6 inches wide based on the 24 inch square floor tiles on the floor. I could stand in the middle and almost touch the walls on both sides of the entrance corridor. This is their biggest mistake in the building design, to force every single person thru a short corridor six foot wide to get to the restrooms.
Oh, and they have long soda fountains you can fill cups from, in addition to coolers with bottled and can drinks. But the fountains have Buc-ees branded sodas, and yes, its kinda like buying a diet cola from Kroger, it just isn't the same as a Coke or a Pepsi. If you bring in a Yeti cup or similar and fill it, they charge you the refill price (which is a fairly common convenience store practice)