We had one of our niece's birthday "date" which is a fun tradition that we and the kids look forward to! As their mother once said, "there is nothing better in life than sleeping on your floor and eating orange rolls." We spent the weekend playing, watching movies, playing in the tub (which apparently they only do at our house!), staying up too late, eating orange rolls for breakfast, playing some more, going swimming, playing in the tub again (rubber duckies are the best thing ever!), and playing some more!
