I have never been to that show.
However, based on the numerous gun/gun and knife shows I have attended over the decades, the only advise I can offer is:
1) Wear comfy shoes.
2) Arrive early.
3) Bring
LOTS of cash along with any tradin' stock you may have ... and
try not to spend it all at one table. 
4) Don't be afraid to ask someone walking around with a gun/sword/other medieval/"obsolete" weapon that you might want, if they are looking to sell or trade. That isn't against the rules ... at least not when I was going to them.
(The last show I attended was the Orlando (FL) Gun & Knife Show, held in November, 2001.

I bough 5 arms ... all of witch were stolen by a scummy

bag who had ... may still have ... the Monroe County, Florida, Sheriff and a couple judges in his pocket.


The Sherrif refused to arrest that ... thing

)
I also planed on attending every day the show was open.
(a) For larger shows it is difficult (at best) to visit all the tables in one day. (The Orlando (FL) Gun & Knife Show, for example).
(b) Since the various sellers are taking in trades, their offerings change throughout each day. They might have what you want at a price you are willing to pay, an hour or three after visiting their table that they didn't have when you visited.