There's this place in downtown Olympia called Warehouse Rock Gym, I've been there once so far and it's pretty fantastic. I hadn't been rock wall climbing since I was like 10, but the staff shows you how to do everything so that really didn't matter. I went with one other person, and it cost us $21 each ($12 for a day pass, $9 for renting equipment...would have been a few bucks less if we'd just used our street shoes though). So, a bit more expensive than other meetups, but it's so much fun!