Am I worried for nothing?

So my boyfriend is going to visit me sometime this summer and my parents don't that I'm dating anyone so when he comes out here I'm planing to tell my parents that I'm just going to the mall but I'm actually going to meet him there and then we would spend time together. I'm worried that parents might call while I'm with him and ask where I am or they might be shopping there while I'm with him! I don't know if I'm just worried for nothing but it'd be great if anyone had some advice for me. And please don't tell me that I shouldn't be dating if have to keep it from my parents, I'm just tired of people knowing about my personal life.