I go for the 1530 to 1930 kip on the Friday,
@J1888 - that's because I am retired and have no work to go to. I then go for the large pasta meal at 2000 - that's rather than 2100 because I will be catching a train from Northampton.
I did read once of the 4-4-4 rule. That is, before any event (and a FBRttC is an event rather than just a ride), get 4 good nights sleep, eat well 4 hours before the start, and then drink/eat something with an energy boost 4 minutes before the start.
I'm no fitness fanatic. I've been programmed by millennia of Scottish genes to avoid healthy food. My energy boost of choice 4 minutes before anything is a can of IrnBru.