Arrival
First of all all the three countries above have excellent airlines flying directly to their capitals. That is already a good start of your holiday. I always consider the flight part of my holiday so if you can fly the national airline it already brings you into holiday mode and gives you a taste of the country. The advantage of flying directly is that especially with children, everybody will be so much fitter when you arrive at your destination.
Accommodation
All the times my family and I visited the above countries we only booked a hotel for the first night or two and decided there and then where to go next. In that case it is extremely handy to have a Smartphone/tablet/laptop and a travel guide (like the Rough Guide or Lonely Planet). With these you can book hotels ahead and decide where to go. Both travel guides have the highlights listed in them and from experience I can tell you that those are in general really the things you can go and see.
Easiest is of course to go to the beach resorts and stay there for your whole holiday. If you want to do that, fine but then you might as well stay home and book a beach holiday in your own country. This does not take advantage of being in an exciting Asian country.
Also the beach resorts will be packed with tourists and if there is one thing I do not like while on holiday is being in a place where most of the people are not locals!
The advantage of Asia is that is is reasonably cheap. So if you are looking for accommodation I would recommend a site like http://www.ratestogo.com or http://www.asiarooms.com to book last minute hotels. This means you can book a more luxurious hotel for less money. I always make sure I have a hotel with a pool and a family room including breakfast. The pool entertains the children for a long time, especially after a hot day out and about.
Getting around
Secondly in Malaysia and Thailand it is quite handy to have a rental car, you can leave carseats (if you need them) in there and your stuff is easier carted around. It also allows you to go places that public transport does not reach and is generally faster too.
Rental cars can be arranged via the internet, with or without carseats, navigation etc.
Make sure that you licence is valid!
Food

A lot of people are scared of the food in Asia. Do not worry! Firstly your Western food is available if you cannot do without. Secondly use common sense and your own judgement and you will be fine!
Most restaurants provide excellent meals and cater for the kids (my kids love anything with noodles and rice as well as Satay).
What to do....
Asia is loaded with national parks, animal parks, temples, museums, caves, shows, shopping malls, snorkeling. Too many things to describe,
If you are interested I could write another article about specific things to do in SEA with children. Let me know in the comments what you are interested in reading and I will write an article about it.
Comments
LissieJan 4, 2012
Yeah I think a series of what to do with kids in Asia would be good - I tend to link similar articles together too so that readers can find them!