Originally Posted by ajax

I don't think you would have been rude at all had you picked up and moved somewhere else. It's your prerogative to eat where you're most comfortable if possible.

Had you been huffy and made a big show (sighed heavily, etc.) whilst moving your stuff to the other side of the restaurant, you might have attracted some attention, but I don't think it's rude. And you don't seem like the kind of person to be rude in this case anyway.