Fish Tales is on the Galveston Seawall, directly across from Pleasure Pier. It's a Landry's restaurant (like Rainforest Cafe) and given the location, you can probably guest that it gets a lot of tourists. And since we're tourists when we go to Galveston, we felt right at home.
When we visited on a rainy afternoon, we were seated right away. I see some other reviews saying it gets packed with Galveston is busy... so consider reservations when the weather is good.
The seagulls had zero-ed in on us by the end of our meal and kept trying to steal our fries, so we packed up our leftovers and headed to the park. Fish Tales is a short walk from the playground and splashpad at Menard Park.