We enjoy a meal aboard. It sure does show a different vantage point. It's relaxing and a fun way to see the river close up. (It is really in Cascade Locks)
If you decide not to take a meal onboard, there is a great Charburger there where you watch the river flow by as you eat. It's like an old fashioned cafetorium where choose your desert, jello, etc then order and take it with you while they make your hot plate. They serve it at your table.
Since you like leaning about things, there is a Columbia Gorge Intrep Center across the steel bridge there. (it's a $1.00 toll bridge) You head for Skamania Lodge then go to the right about 2 miles. Very interesting. There is a Bi-plane hanging from the ceiling. And on the first floor in the rear mezzanine a short movie replicating how the Gorge was formed during the last Ice Ages.
It's three stories tall with many interesting facts in it.