Ivar's Salmon House is built to resemble a Northwest Coast Native American longhouse and is filled with artifacts that kids find fascinating. If they get restless, they can go out to the floating patio and watch the boats passing by.
At a marina overlooking Elliott Bay and downtown Seattle, economical Maggie Bluffs Marina Grill has food the kids will enjoy and provides crayons to keep them occupied while they wait. Before or after a meal, you can take a free boat ride across the marina to an observation deck atop the breakwater.
The Old Spaghetti Factory may be part of a chain, but with cheap food, a convenient location across the street from the waterfront, and loads of kid-friendly noodle dishes, this place is a good bet when you've worked up an appetite walking the length of the Seattle waterfront.
If you've got a young sports fan in your family, don't miss Sport Restaurant & Bar, across the street from the Space Needle. If you aren't too hungry to wait, try to get one of the booths that has its own private wall-hung TV. You'll be so close to the on-screen action, you'll be able to make the calls before the refs do.