I've seen similar situations at meetings. One woman I saw came back after 13 years just to get a chip. Nobody seemed annoyed or anything....I found it interesting if nothing else.
Truthfully, I think the majority of people in AA are good people and as long as you don't go in there bragging about how you didn't use AA to get sober but still got sober anyway, and act a little humble about being there on some level despite the fact that you are already sober and don't use AA, nobody should have an issue. And if they do, f*ck 'em!