Found set of keys Dublin CC 22/23 June

I found a set of keys in Dublin CC near Temple bar/dame street night of 22nd June / morning of 23rd June.It has 4 normal sized keys and 1 smaller key taped up, a gym membership card and another keyring to do with irish army.If someone can tell the name of the gym and what is written on the irish army keyring, i can meet them and return them no problem.