I go just about every year. I organized a couple of them there ('93 and '94). Best project I ever was a part of.
'94 was the last year they had hot air balloons, sorry they disappeared off of the calendar (I still keep in touch with those folks). '93 was the first year we brought Sean Tucker on. Highly encourage watching this guy, he's the best in the business IMO.
edit: here's video of the '93 coverage of the balloons.