This has been such a GOOD thread to read. There are so many more NICE quilters than the rude ones at that show. Unfortunately, it only takes 1 person with a big mouth to make you feel bad - IF WE LET THEM! So I'm going to try to take the good advice you've all give:
I'm going to try to be patient when I'm standing in a long line - sometimes I forget to be.
I'm going to ignore rude people - better yet - I think I'll just smile at them as if I didn't hear what they said. I like the advice about not lowering myself to their level.
I'll never remember the come-backs anyway!