Snoop - we'll try and sort things out a bit nearer the time but hopefully we will have a few helpers out on the course to hand up bottles etc.
Eating and drinking properly for a 100 is important and you'll be glad to know it starts well before the race. From Wednesday onwards up your carb intake, preferably 'healthy' stuff like wholegrain rice, pasta, porridge etc but I always take it as an excuse to have a cake after every meal
The day before you want to have a big meal. For Sunday morning I'd suggest having a largish lunch on Saturday as if you stuff yourself in the evening it can wreck yor sleep.
Morning of event try and eat about 3 hours before you start - porridge is the breakfast of champions but if you don't like it at least get some cereal/toast down etc
On the way to the event start drinking a carb drink. Preferably an isotonic one so Go rather than PSP if you're using SIS stuff. I then tend to have a banana about half an hour before I start just to leave some solid food in the stomach.
For the race you'll probably need 2 bottle holders. I would put a bottle of plain water in one and make up 4 bottles (3 if it's going to be wet & cool) of Go (or other carb drink) for the other. Start with one and then give the helpers the others. I would also carry 2 or 3 gels - but you can use anything else to give some extra carbs - banana, malt cake, jelly babies, fig rolls, jam sandwiches ... If the food is messy put it in a greaseproof paper bag there's nothing worse than sticking your hand in your pocket and getting covered in gunk
Drink regularly, mainly the carb drink. I aim to drink every 10 minutes or so 3 or 4 gulps. We will hopefully get some people out at about every 25 miles where you can drop your bottle and get a new one. The water is good to wash away the taste of the carb drink (which can be pretty awful after 4 hours) and to tip over your head if it's hot (however hot you are tipping carb drink over your head tends not to improve the situation
)
Hope that helps