I think the most important thing is to enjoy it, which I'm sure you will. I've been lucky enough to fly F twice and really loved the experience. The second time the crew made it really special.
I think the only thing that I didn't realise first time around was that you can have your meal at a time to suit you, rather than just waiting to be served with everyone else.
And don't let them leave the big box of chocolates on your tray - the temptation is too great.

Have a great trip!

PS - Welcome to FT!