And as I stated on MOC even if with this letter you were good to go, this letter only applies to places licensed to sell alcohol because, according to the letter, the definition of a "licensed premises" is spelled out in the liquor control code as being a structure or part of a structure. This doesn't have any bearing on a non-CPL holder with a firearm legally stored in their vehicle's trunk while in the parking lot of one of the other listed places in 750.234d like a theater, bank, sports arena, church, etc.
Bronson