It was my first time in Christmas town and I absolutely loved it. But I'm a sucker for Christmas lights so I was bound to have a good time.
I would definitely recommend walking vs driving for two main reasons:
1. Obviously to avoid the long waits.
2. You get a totally different experience when you're outside walking through the neighborhood. You get to see all the little details in each house, you can wave and yell "Merry Christmas" to all the kids (and adults) who shout from their car windows and there may or may not be a few photo ops with Santa!
What are you waiting for? It's free, beautiful and lots of fun!