The most current revision of NFPA 72 (fire alarm code) and basis for the fire alarm component of the building codes to which RCID is subject to does not allow for multiple individual systems within a common structure. You are also required to shutdown house audio to give priority to the fire alarm signals. TDO uses Siemens as the fire alarm vendor you can bet your rear end they have techs looking to resolve the problem asap. If I had to guess they are probably having an issue with one of the Vesda aspirating smoke detectors which can be sensitive.
And just remember The first of Walt Disney productions core show principles: Safety