I'd stay in Westport and take the shuttle to Arrowhead if transportation is a concern.
http://www.kcchiefs.com/arrowhead/pu...portation.html
Just going off your avatar, there's a rock bar there with some good taps. Middle of the road (for KC) Q at Char Bar, and bunch of other eat/drink options.
http://www.theriotroom.com/
http://charbarkc.com/