My usual set up for golf is,
Breakfast - Wheatbix, toasts with marmite (You either love it or hate it!)
A lucozade energy shake (Bit like protein shake) prior to playing, go to the toilet, have a fruit. Play - Lucozade raspberry flavor (Oh yes!) a bar of boost - Bottle of water/lucozade - another bar of boost - Play ended - Lucozade recovery shake.
That's pretty much what i do on a competitive day of golf. Towards to the end, i don't really get tired which gives me the edge over my opponents in the last few holes.