Unless they changed the medical card system in the last 3 years, that’s not true. You can use that rec at any dispensary and they’ll waive the state tax. At medical ones they waive both state and county tax. Check the rec and see if it specifies a dispensary location, they used to just specify the doctor you got it from to ensure it’s real.
Nah with a melt, the other stuff is more important than the cheese. In a grilled cheese, the cheese is the star. Even in your link it says the cheese accompanies whatever else in a melt.