It would be very rare that you would find chicks at a poultry show, at least I have never seen them.
This is an exhibition poultry show so you would expect to find predominantly pure bred poultry and waterfowl. Mostly breeders, but there will be some pet quality birds there.
You will also see suppliers selling every thing you will need ( and don't need) to raise poultry. I also figure there will be at least one vendor there selling poultry books and magazines- many 100 years old.
Oh yeah there will also be about 2500-3000 birds there of most every kind being shown by 300 of your closest friends.
Worth a 2 hour drive to see the ABA Nationals? There will be people there from all over the USA. I will be driving 1000 miles - so I would vote yes, don't miss it.
Bob