I agree with the sentiment re: "mix it for the real world", but aren't theaters required to adhere to some degree of compliance with presentation standards as p

I agree with the sentiment re: "mix it for the real world", but aren't theaters required to adhere to some degree of compliance with presentation standards as part of their licensing agreements with film distributors? I know that the "THX" mark carries specific requirements, as do "IMAX" and "OMNIMAX".