You will get a catalog when you get there - but your dogs number will have very little to do with when you run.
You need to talk to Joe Broyles or Lee Jolley that Friday and they will direct you to the stake you are supposed to be at. They divide up the pros and multidog handlers and send them to certain stakes to speed things along. IE - Mark Mosher with 8 derby dogs will be sent to Acadiana Derby to run all his dogs first thing. THIS JUST AN EXAMPLE!!! If you are single dog Am - you will probably be pushed back a ways to get the multi dog handlers smoothly between stakes.
It is at least a 45-60 min drive to the trial grounds from the Natchez Days Inn ( Trial Headquaters) approximately 52 miles each way. All sites are directly off of Highway 61. The sites seem to be closer to St Francisville than Natchez.