The crowds were what I would consider average. Early morning and things were walk ons, but afternoon and evening, there were lines. The weather, now that is a different story. It rained every day we were there. Usually in the evening but also, quite heavily. Thunder and lightning were also present. They shut the pool down almost every evening for lightning and some attractions in the parks were closed. Never got to ride Test Track because of the rain, but I did do Mission Space twice. My advice is to plan on FastPass in the afternoon and evening and count on rain at some point during the day.