Ladybee, thank you for the info. (Mean it, not being sarcastic! ) That's just about the only thing I worry about - I know R's fine with change of scenery, flying, new people, etc etc, but the tummy...
Problem with UK is that so far I haven't seen anything for d&v - every time R had it here, they've just said to hang in there and come back if he's dehydrated! The doctor in South Africa did however give me a special mix when we were there which supposedly works almost immediately to bring on the flight with me when I came back the other day (R had ever so slight upset stomach, and I was worried it could develop into something on the plane). It was a powder mix (can't remember what the active stopping ingredient was) to stop, to rehydrate and then that friendly bacteria stuff you have to take after d&v. I've binned it now as was not sterile, but I guess I could try doctors here, and if no help, could call doctor there and get my mom to post it to me.
If we go, it'll probably be late January, so at least wheather wise ok. Hmm, need to decide!
Ladybee, if you do take B with, I'd highly recommend making an appointment at the Hospital for Tropical Diseases' Travel Clinic in London. They're cheaper (slightly) than normal travel clinics, but know more and have actual doctors. It beats going to gp or travel clinic, who'll immunise for randomly anything (from a typed up list, not taking individual patient into account). We went before Peru, and they were brilliant. I suspect if it was just for dh and I, the nurse would have dealt with it on her own, but as R was also involved, she went away to consult the doctor, and R's age, exactly (as in towns) where we were going and his medical history were taken into account. We ended up not giving him any jabs (e.g. yellow fever - for where we were going, it was riskier to medicate than not). He also gave us pediatric malarone for malaria for R, but he didn't have to take it beforehand - again unlikely areas, but had to have with us to use immediately should symptoms develop.
Love the domestic goddess tips - will try sandwich thing with R, who is currently on a hunger strike (except for milk). Am in two minds about the milk thing - on the one hand, it would probably mean he's able to sustain this no-eating-regime for longer and possibly make it stick, but on the other - at least he gets the required vitamins in this way? He eats grapes and a little apple, but during the last 2 days, that and a couple of spoonfulls of homemade soup was about it! Sigh. (At least no sign of anorexia - knew the Michelin Man start in life would pay off sooner or later...)