that they were together in 2004. If you look at any online reviews for that time period you will see them listed together. Now I can not find when they started together and when they dropped holiday inn name. Also from any pictures that I have looked at I have never seen the holiday inn name on the building so maybe they just owned the hotel or were part owners.

http://www.localtom.com/nv/las-vegas/fitzgeralds-casino-holiday-inn-13167363.html

http://www.vegastripping.com/lasvegas/fitzgeralds

http://library.nevada.edu/arch/casinosbyname.html