Daytona always has a decent selection and it's wroth at least 1 trip if for nothing else than like you said you will be able to handle the animals. Plus in some cases you get to speak directly with the breeder which can be an invaluable resource.
Some thing that I usually do is check the National Breeder website for when they post the vendors list. That way before you head down there you can see who some of the vendors are and even check their website/facebook pages. Even the BOI. That list might give you an indication of if you think it's worth while or not.