There are benches with backs, which makes it easy to lounge a bit while you type away on your laptop.
There is a Starbucks right at the head of the pier, but you're also right next to the Ferry Building, so you can pop in there to the Peet's and grab a "Black Tie," if you're into the whole cold brewed thing. (Be advised, the barista was some scuzzy guy with dreads and a home-made apron, the last time I was there.)
No matter the microclimate on the particular day, the bench arrangement is great. The ones at the very end of the pier end up in shade after about 2 PM. The ones up the sides of the pier seem to be in sun just about up until it goes down in the west.
Sadly, no parrots. Many seagulls.