We got this Graco travel system from Wal-Mart long before our second baby was born. Btw, there is a promotion ($25 rebate) going on for this product. I recall we bought the same car seat for our elder daughter when she was new born, we still have the base which we are using again, but I forgot how we install the car seat at that time (note I also wrote a blog post on this topic 4 years ago).
We also went to the St. Louis Outlet Mall (formerly the Mills), and Serenity got to play in the big indoor playground. Sometimes she just runs around.
This is the best indoor playground in St. Louis, in my opinion.