I hope you had a happy birthday!
It looks like you got a pretty good assortment of colors and prints!
Many Walmart fabrics are ok if you wash and dry them first, then starch them before cutting. When they are dried they tend to "shrink", bringing the fibers closer together so you get a little better "quality" that way. I wash and dry all my fabric first, anyway, then iron and starch it before cutting. They do have some that are closer to a cheesecloth weave so I stay away from those if I do buy there.