Sri Lanka with a 10 month old baby realistic or wait until she is older

Realistic and many families do it. Practical realities: international-brand diapers (Pampers, Huggies) are widely available in Cargills, Keells and pharmacies in cities and tourist towns; baby formula (Nestle, Lactogen, Anchor) is also widely sold; baby food jars are stocked in larger supermarkets but limited variety, so consider bringing a starter supply for the first week. CAR SEATS are NOT standard in Sri Lankan vehicles, including chauffeur cars. You MUST request a car seat in advance from your chauffeur agency (most can arrange it for ~10-15 USD/day) or bring your own. The climate is fine for babies if you keep her cool, well-hydrated, in shade, and use baby-safe sunscreen and mosquito repellent (DEET-free for under 2). Choose AC accommodation and avoid the hottest dry-zone afternoons. AVOID for an under-1: bumpy long drives, very spicy food experiments, packed buses, jet ski / boat trips with significant sun exposure.