Thanks, all. The hotels are quite full midweek. Found Country Inn and Suites for less than $100 tax included. Many just don't have crew rate available. Apparently the waterpark is adding to the MOA back-to-school shopping mania. I dug thru several major chains (midrange $) and there wasn't much open. Didn't really want some Motel6 or Knights Inn...
Problem solved and the suggestions helped alot.