Parking is annoying. You will have to pay to park and they will take the money directly from your paycheck. Depending where you park depends how much it will cost. I parked in the 25th Avenue Garage and it cost me $10.40 to park on the roof. There is cheaper parking in the shuttle lot. Either way there are always shuttles to avoid the rain or you can always walk.
Not many affordable lunch options unless you go to the Children's Hospital. They have Taco Bell, Subway, Ben & Jerrys and a cafeteria. These places cost a little more than if you were to go outside of the campus but it is convenient. Be prepared to pay with cash if you are going to eat at Taco Bell. The main hospital cafeteria is overpriced in my opinion. Salads are wieghed and a side salad could cost you $5.00. I you want a salad as a meal then you may pay $7-10. Best bet, take you lunch or walk to somewhere off campus.