Totally depends on where you go. Some places are hard-asses about it, some places don't care. You might have to try a couple times, but don't get discouraged. You'll be able to get drunk on your birthday.

The bike trail in the Southside, too. I work at the Southside Marina, and it was pretty insane for a few weeks. As I was taking them out by the hundreds, I'd look up and down the river, and imagine how many there would be in the spots that didn't have a me to spend whole days hunting them.