Finding a cab near Ogilvie Transportation Center
I'll be attending a performance at Ravinia in a few weeks, and whereas in the past I've stayed in Deerfield and driven there, this time I'm planning to stay in Chicago and take Metrarail. The train back from Ravinia gets in to the Ogilvie Center around midnight, and I assume there will be lots of concertgoers besides myself looking for cabs. Any hints for finding one quickly would be appreciated.