Just learned last night that two of my favorite blues acts, Mississippi Heat and Trudy Lynn, are each appearing on the same day at this festival this upcoming weekend. I have to try to get some other things worked out in order to go, and am concerned about getting tickets. Does anyone know if this is one of those deals that always has plenty of seating and you can buy a ticket on the day of the show, or would I be wise to make sure I actually KNOW that I have a ticket?