Here is all I could find on the subject, doesn't appear to address parking lots.
So the law (rule) says no but we are their guests so we're OK in the casino?springerdave.
R 432.1212 Weapons in casino.
Rule 212. (1) An individual may not carry a firearm or other weapon in a
casino, except for the following entities:
(a) State, county, city, township, or village law enforcement officers, as
defined in section 2(e) of Act No. 203 of the Public Acts of 1965, as
amended, being § 28.601 et seq. of the Michigan Compiled Laws.
(b) Federal law enforcement officers, as defined in 5 U.S.C. § 8331.
(c) Armored car personnel picking up or delivering currency at secured
(2) Law enforcement officers conducting official duties within a casino
shall, to the extent practicable, advise the Michigan state police gaming
section of their presence.
(3) Private casino security personnel may carry handcuffs while on duty in
Edit to correct text.
History: 1998-2000 AACS.