I'm glad you had a good time! Yes, there is plenty of good food and drink to be had in Portland. I'm looking forward to moving back this year.
The building on the south end of the Stadium is the Multnomah Athletic Club, an athletic/social club that has been there for over 100 years. It's apparently the largest indoor athletic club in the world at 550,000 square feet and 22,000 members.
Here is a pic of how the stadium was situated for baseball before the renovation:
