All kids will want a ride in a tuk tuk, a three-wheeled vehicle which works a bit like a taxi. Just be warned that they donít have seat belts. For longer journeys taxis are often cheaper anyway.
Although the north is opening up since the end of the war, it is still developing its infrastructure, so unless you are used to roughing it as a family, or going with an experienced tour operator, maybe watch this space for a while.
For water activities, make sure the provider is accredited, and that there are helmets and buoyancy aids available.
When you are on the south and southwest coast, be aware that there is a very strong rip, and so best to keep to the small, enclosed bays when swimming.
Buses donít have a great reputation for safe driving in Sri Lanka, so stick with the train or taxi if you are a nervous passenger.
Unexploded landmines still sadly exist in some parts of the north, so do not stray from paths and marked trails in these regions, ideally with a local guide.