Fantastic! What were the highlights for you? What plane were you on? I think you mentioned a 777?
If you can manage a First ticket somehow on a (admittedly old now) 747 then the experience is pretty special as you are literally at the front of the plane. The pilots are above you on the upper deck and all the cabin crew are situated behind you. Pretty cool! The 787-9 has the latest and slightly tweaked version of First. I have yet to try it. I almost did earlier this year but my plans changed...