They could move it to Texas, Florida or Georgia. Many states are open (some have been for a while) and welcome the business. All three of those states have major convention venues and hotels to accommodate a convention of this size. I've been to various toy conventions in Arkansas, Kentucky, and Georgia this year and last year and they were not super spreaders like everyone would have you believe. Restrictions were in place and protocols followed carefully. Handled correctly it shouldn't be an issue even in Illinois. I have been on several convention committees over the years and unless they have a written contract in Illinois there is no reason it couldn't be moved. I've seen it and done it before. Takes a little work but not impossible.