In my limited experience helping run programming (at-con program ops often lives in the Green Room, and thus is sometimes delegated to Green Room staff, especially early in the day), if someone showed up and said they didn't want to be on a panel, we said something like "Are you sure? Okay, we'll take you off it then, thanks for coming by." The "Are you sure?" part was because it's possible that some juice, coffee, or tea, and maybe a couple of aspirin or such, were what they needed: it's the difference between "I don't know why I'm on this panel" and "I have a headache."
Having you, or anyone, sit at the end of the table for an hour saying nothing accomplishes nothing I can see.
In your shoes, I'd go to program ops and say something like "I don't know why I'm listed as being on this panel, since I already told you I'm not doing it."
no subject
In my limited experience helping run programming (at-con program ops often lives in the Green Room, and thus is sometimes delegated to Green Room staff, especially early in the day), if someone showed up and said they didn't want to be on a panel, we said something like "Are you sure? Okay, we'll take you off it then, thanks for coming by." The "Are you sure?" part was because it's possible that some juice, coffee, or tea, and maybe a couple of aspirin or such, were what they needed: it's the difference between "I don't know why I'm on this panel" and "I have a headache."
Having you, or anyone, sit at the end of the table for an hour saying nothing accomplishes nothing I can see.
In your shoes, I'd go to program ops and say something like "I don't know why I'm listed as being on this panel, since I already told you I'm not doing it."