Not really a question others can answer, without knowing the specific show.
Every show is different ... some consider a few hundred people a whomping success!
Some, are disappointed if it is not in the thousands.
Thus, your stock needs are going to vary.
Similarly, some craft shows there are huge sales of the sort of thing you are offering.
At some, patrons are not looking for that.
While some shows, are inundated with vendors offering similar items.
Or perhaps you may not have any competition.
Best to find out more about your specific show.
Good Luck!