Chicago Miniature Shows

I am looking to go to the miniature show for the first time In Chicago in April. Has anyone else ever been? I am a little confused as it seems that there are two going on the same weekend?? There’s the international bishop show that’s at the Marriott by O’Hare and there is also the Chicago spring showcase of miniatures the same weekend at the Wyndham garden hotel. They are the weekend of the 25th. Has anyone ever gone to these and what is the difference?