Porridge made with half-fat milk and a little water, over bottled cherries and sultanas. No sugar and very little salt. I like No-sugar Alpen but I can't find it in France. Most French cereals are very sugary, but I have found Weetabix.
Although I live in France, I hate croissants as I find the pastry too greasy.
In French hotels, I usually just have a piece of a baguette with some butter and a mere hint of jam (the only time I eat anything so sweet.
In Egypt last week, I ate far more than I do at home - some wholemeal bread with jam, a cheese omelette and fresh fruit salad.
In a UK hotel, I will have bacon and scrambled egg, with one round of toast and muesli if it is on offer.