Interesting this that GIG is not busy as this of course was only recently upgraded to a 777-300 from a 3 Class 777-200 for what I thought was very heavy loads indeed.
I have been in an F cabin as the only passenger or the only 1 of 2 - having your own personal cabin is very nice and there will be plenty of food to choose from (even if the odd choice is not there assuming that you want the same food) so would not get too fussed personally and enjoy your own private cabin!
FD.