We drove into downtown on Tuesday thru Thursday and used a parking lot on Richards street somewhere between Nelson and Dunsmier (sp?) You can use your credit card at this lot and there were always plenty of available spaces. You can buy a timeframe from 6AM to 6PM for $12.75. If you stay into the evening it is another $7.
There is also plenty of street parking available but it is limited to 2 hours and they have apparently really jacked up the prices.
Another option we considered was coming into town on 99 and parking on a side street (no cost) after you get close to town and then taking the bus into downtown. Their are bus stops situated all along 99 and this would be a very low cost option.
We really liked the convenience of having our car near by and ulitimately decided paying the parking fees was very much worth the money.
Traffic is easy to deal with as long as you get off of the most heavily traveled streets. You can see the congestion appear in plenty of time to turn off to less traveled side roads.
Enjoy the Olympics it was a wonderful time that ended much too soon for us!Edited: 20 February 2010, 19:00