Kyle, a Tennessee license will be fine. You can come without a boat, but if you have one that will handle a good-sized lake, it would be helpful. Regardless, boat or no boat, you will be welcome and I will guarantee a seat in a boat. That's my job on these trips. As for the cost of the license, I don't recall. I think it's in the $20 range. Google it. Looking forward to shaking your hand.