True. They are but always in stock though.
I love going to Waco and the Dr. Pepper museum and getting the real deal Dr. Pepper. In bottles.
Mexican Cokes use Cane Sugar, which differs from US manufacture. Also the bottles seem much more sexy than cans.
FWIW, a fellow manager back in the early 90s, would drink Diet Coke as a substitute for coffee, but he consumes a 6-pack before 10am and 1-3 six-packs throughout the work day.
I now just drink tap water in a used sports drink bottle, rotating new bottles periodically for hygiene. Keeps me hydrated and low cost.