We are a couple of hours from Cooperstown. I have been to the hall of fame but sadly never Ommegang. I don't think they were in business when I was at the hall of fame.
Every year they have a Belgium Comes to Cooperstown festival that sells out in minutes. After some renovations it was cancelled for this summer but will return next year. Tickets sell out in minutes I understand. They allow camping, with no connections so you do not have to drive. I really wanted to go some year but we sold our RV and tent camping is not an option for us.