I recall one time when I was 17, i worked at an amusement park over the summer.
Jack Hanna was there as part of the park is named after him. he was there for a couple days to do presentations on animals. Well, I was walking to the employee break area to grab some lunch, and there he stands, on the phone on the side of this service road in the back area, yelling at someone on the phone. Standing there in his jungle boots and shorts and all that shit.
I walk by saying, "Oh cool, it's jack hanna and he's screaming and cussing at his agent, right. better get lunch"
That's about my entire experience with being face to face with celebrities.