Gatlinburg STR Permit - Large 6br pool cabin - Letter from Fire Marshall

[Josh Madigan]

I own a 6br pool cabin that sleeps 20+ and am going through the process of adding sprinkler system to bring it up to code for >12 occupancy.  However I just received a very concerning letter from the Fire Marshall Office saying I need to provide a notarized letter within 5 days stating I will not have more than 12 occupants in the cabin until I change the Certificate of Occupancy which would be devastating to my bookings.  Are they actually going to start enforcing this?

Does anyone know what else needs to be done to change the certificate of occupancy from less than 12 to greater than 12 besides the sprinkler installation and has anyone successfully gone through this process?