We finally got there. Last year we were "rained" out by the hurricane. Interesting tour. They take you thru the major steps in the beer making process and you end up in a top floor museum/bar where you can sample the brew and gather in a 360 degree view of Mazatlan. Free.
You can go with a tour group. Or have the hotel concerige reserve you a slot. The 8 of us went in a red truck (our cost) from the hotel.
Remember long pants and closed footwear. No pictures until you get to the museum/bar.