The pool bar doesn't have a kids menu but I'm sure it only sells things like packaged sandwiches and snacks. If you're asking for DDP purposes I am pretty sure you cannot use DDP at a pool bar - the only exception I have heard of might be Coronado Springs.
I have no idea about the Boardwalk Bakery. I have heard somewhere that they had some sort of kids menu but I can't recall where I heard that.
The site below has good info and pictures of the offerings there.
http://www.disneyfoodblog.com/2009/12/28/disney-world-bakery-throw-down-boardwalk-bakery/
Notice the window with "Hue G. Krazont" Proprietor (or "Huge Croissant"!) In all our trips I never noticed that
Yes, Hurricane Hanna's accepts the dining plan.
You are correct...there are not a lot of dining plan CS options in the Epcot resort area.