If you don't want to use lockers think about wearing clothing with zippered pockets. I have at least 8 pairs of shorts and capris that I bought at Academy outdoors specifically for travel purposes. They have become my favorite travel wear! You can put your most important valuables in the zippered pocket(s) and zip them up. I have bought the Magellan brand. They usually run around $17 for shorts and $27 for capris. I think they also make pants that will unzip at thigh level to become shorts which cost about $30. Best clothing investment I've made for travel (especially theme parks) in years!!