I have not been back to Trans world since it moved from Chicago-area to St. Louis. I would imagine there must be a web site with the information you ask for/need?
At one time all you needed was some evidence that you owned a haunt or had a tax number like if you owned a store.
Then haunt owners would bring some of their haunt workers and suddenly the show floor became very crowded, too crowded for some vendors to do business.
Complaints followed. Haunt owners countered with:"But I send my guys around to scout out the venders and i buy merchandise upon my haunt worker's recommendations."
Then the Party Store suppliers and costume dealers , but especially the Wedding bridal gown sellers would lose expensive catalogs to people who just liked the pretty pictures and would never buy.
Then you would have the sales tax Sales number wholesale only "How many dozen Werewolf masks do you need?" Asking this of a home haunter, wasting their valuable time, needing to make sales to real customers to get the expensive floor space paid for!
Add to all of this a scheduled "Celebrity" appearance on a busy Saturday afternoon and certain aisles become blocked and not able to move=good by sales!
No kids allowed but i saw some get smuggled in, only to stand away from everyone, everything hiding from security guards in order to remain there seeing doing almost nothing.
Look for a Trans world website. I think there is now an admission $$?
Don't take your Wife or Girl friend along if they get scared by masks and costumes.