Posted: 22/08/2016 at 13:09
I find for race day that it is OK if I allow three hours before the race. Maybe you can get away with that. As for the second part, I religeously have a sachet of instant porridge three hours before the race, regardless of what any particular hotel might offer for breakfast. I follow that with half a litre of sports drink 2 hours before, so I have time to pee out excess liquid before the race. Maybe you could trial a similar regime.
According to web searches it is likely you can tolerate porridge so long as it is not contaminated with wheat in the mill. Some brands might offer this, e.g., from healthfood stores.