Arts Management investigated this vulnerability as soon as it was announced and there is nothing in our software solution that we supply to our venues that uses log4j.
For further reference, the NIST description of the log4j vulnerability
For those on AMS Cloud, our intrusion detection tools provide additional mitigation against this vulnerability as a precursor to all theatre manager server processes (which, as mentioned, don't use java and are not vulnerable). This provides multiple layers of protection to your data.
Self hosted venues should not be affected, especially if they have not installed any other server processes that run Java.