This is a very convenient parking garage for activities in the convention center area, including staying at the Richmond Marriott. It's a large garage, seemingly with plentiful spaces, although I don't know how often it might fill due to convention center activities. Air-conditioned pedestrian walkways connect the third floor (Blue level) to the convention center and the Marriott (turning out to be the Marriott's first floor).
The garage is $20/day most of the week, but $8/day after 5:00pm on Fridays, Saturdays, and Sundays. There're no in-and-out privileges with the 24-hour price. When we were there, the garage was fully automated - the pay booths had no attendants and the pre-pay machines were turned off, so you paid with a credit card at the drive-up machine at the exit. read more