Seeing Seattle's Fireworks
Seattle loves the Fourth of July. We must, since there are two distinct fireworks shows in the city: WaMu's Family Fourth show that happens at dusk over Lake Union Park and Ivar's 4th of Jul-Ivar's show that takes place over Elliott Bay at 10 p.m. Not to mention all the other shows from nearby cities (eg Redmond) that are visible from town.
If one were in a taller, north and/or west facing hotel room, both Seattle fireworks displays would be visible from one's window. Barring that, the best fireworks viewing is from rooftops around town.
One place that will be open during Friday's holiday is The Pink Door (1919 Post Alley, (206) 443-3241). The Pink Door is an Italian restaurant located in the Pike Place Market vicinity. There is no sign, but there is an actual pink door that opens up into a charming restaurant. More importantly, they have a wonderful rooftop deck and if you can get seated out there, a view of the bay which is perfect for the Ivar's fireworks viewing.
As far as views of Lake Union show without actually going to Gas Works Park, well, there are plenty of restaurants that border Lake Union. On the southeast side is BluWater Bistro (1001 Fairview Ave N # C (206) 447-0769), which is also known for its incredible view. Since it's sitting right on Lake Union, there can't be a better view of the WaMu fireworks. Pair that view with a cocktail and it might be a great night.