They are VERY particular about carrying anything onto the rides. I had a Vera Bradley wristlet (big enough to carry my iphone, park ticket, credit cards, some cash and a bandaid) with a lanyard on it. Putting the lanyard around my neck was not acceptable, I had to show them that it fit into my pocket completely or they would not let me take it on the ride (and I would be stopped again during the queue to verify if I had it in my hand instead of in my pocket).