Tubing in Vang Vieng was the driving force behind my visit to Laos. It turned out to be as good a reason as any, and I was glad to make it to the little backpacker haven for my 32nd birthday as well. I celebrated with rock climbing by day, and Korean BBQ and beers by night.
Then it was on to Luang Prabang, and a little culture (ie. more temples), before I jetted over the border to northern Thailand.