The nausea I feel in Madrid alarms me at first. But it’s not long before it becomes clear that this is no reaction to the tapas, paella, sangria or anything else. This is gastric flu. So while it’s a relief that it’s just a normal bug, gastric flu obviously wasn’t part of the plan for our holiday in Madrid: our first family holiday in almost 2 years. And here are the mistakes I almost made which could have ended up ruining our holiday – mistakes which I consider to be the top 5 mistakes to avoid when things don’t go the way you would have wished them to.