Before 2018, the JW was exceptional. Good service, and they had Gen Con theming (folks in costumes, special items in the restaurants/bars).
The theming started to disappear in 2018 under new management who wanted to be more "professional." It's completely gone now. The overall service has also gone way downhill (how is that "professional"?). We had numerous issues this year, but that could be staffing issues due to the pandemic.
How are the other hotels handling Gen Con?