Your best plan is to have a budget, then double it.
There are so may knives that you will have trouble making up your mind. You will stop at a table and find a knife that you really like but then say to yourself "I just got here, I can't buy the first knife I find that I like", so you keep moving going from table to table. Then you find another one you like better, but again you are not ready to pull the trigger. Now you are trying to decide between these 2, so you go back to see the first one again and it has been sold and kick yourself for not buying it when you had the chance. This is the scenario that will go on for many show goers, some people spend a whole day trying to make up their minds.
Some people ask to take pictures of knives they like and write down table numbers which helps them decide and keep track of knives they liked.
Now you have spent your original budget and come across a knife that you have to have, and this is where having extra cash comes in handy, or a credit card.
The show will have an exhibitor list on their website, make a list of makers and table numbers that you want to see first if you have any particular makers in mind, otherwise wing it!!