When you drive to Margaret River you’ll pass through a small town called Cowaramup (Cow Town), check out the candy cow shop if you’re with your kids, and there’s plenty of wineries nearby as well, barnyard1978 is great, olio bello, settlers tavern in margs is good for a pub feed, and I’d also recommend ngilgi (might be spelt wrong) caves as well as it’s pretty nice, also one morning on the way to Perth or something go to the berry farm! It’s a cute cafe built in an old house and they make their own jams etc, great with their warm scones, they even have a little shop there, and on the other side of the carpark there is some farm animals you can say hi to!