Gone Fishin'

There are tons of fish restaurant crowding the streets with fishtanks. All kind of fish, squid, octopus, and weird worm things.

I was curious what would happen if I took up fishing. Walk up to a restaurant, open a tank, bust out a fishing pole and a bucket of bait and pull up a lawn chair. What would they do?

Could I pull the foreigner card in a situation like that?