Our server brought it to us along with our drink order. I don't see an issue asking for it, as you're entitled to it, but they should know in advance and give them to you w/o asking.
EDIT - We went for lunch, and it was hands down the worst meal we had at Disney during our week stay. It was over $150 for my wife and two kids (1 infant so he was free, thankfully), and I couldn't even make myself attempt to eat the flatbread, and spaghetti/meatballs. We left at least 3/4 of our meal on the table. If it's any consolation, the dessert was ok, including my DD's bday cupcake. Oh, and the bread was good.
Hope you have a better experience, but just wanted to let you know what we thought about it.