In summer, the sun sets later and later until the mid-June solstice. This is an ideal time to witness the beauty of sunset over the Columbia River. You'll enjoy barges and sailboats going by. But where can you dine, have a drink or dessert and see the sunset? Vancouver offers you several choices.
Red Lion at the Quay - A little dated, but the restaurant has great windows. A side patio may be open (check before going).
Joe's Crab Shack - Informal seafood and dinner. Patio deck would provide a great view of the sunset.
Husong and Larry's - Next to Joe's Crab Shack. Nice deck. Mexican-American food in a lively (read noisy) atmosphere. They'll sing to you on your birthday!
McMenamin's on the Columbia - Outdoor dining with great pub food. McMenamin's would be my pick for a fun evening watching the sun go down.
Beaches - Next to McMenamin's. A fun place to watch the sunset. Menu is varied... pasta, fish, sandwiches. A bit more upscale than McMenamins.
All of these restaurants are located close to the Columbia River Waterfront Trail. Parking can be tight but it is free and usually available.