How to change default mount options to support check=relaxed

I am new to Linux (RHEL 7). Moving from Solaris. My application (which makes use of the automount features in Solaris and now Linux - no manual mounting) needs to support both iso9660 and UDF in the CD/DVD devices. Additionally, the iso9660 CDs need to make use of the ability to reference filenames as both lower- and uppercase.

I attempted to make use of the 'check=relaxed' option for 'mount' by creating an entry in /etc/fstab. Worked great for iso9660 CDs. Not for UDF DVDs - it's not a valid option for UDF.

I cannot change the way media is written. Many, many consumers need the media to be written the way it has always been. Consumer systems are primarily Windows, but also Solaris and maybe other OS's.

I have been trying to find a way to change the default mount options only for iso9660 media (and leave the UDF settings alone).

I believe the system is using systemd. autofs is installed, but not enabled. I would like to keep it that way, if possible.

Any suggestions? Thanks!