This question has "sort" of been asked before (quite a while ago) and "sort" of answered. I'll try it again to see if there is a more up-to-date definitive answer.
Are there any places to check out the tequila without buying a whole bottle? I'm thinking you could just go into any bar and order shots of whatever they have on the shelf, but thought there might be tequila stores that could accomodate the process better. Like there are several tequila stores in PV that will pour tastes for sampling with the hopes that you will buy a couple of bottles. Anything like that in Mazatlan?