Yeah Dave Matthews Band is hosting a bunch of four (or three?) day festivals themselves in America. However if I see Phish once or twice (which I will) on this tour, I'll probably skip the four-day Watkins Glen festival because between money, getting there, and parental permission, it'll be tough. Phish said they still have summer announcements, HOWEVER, they have no touring plans for the rest of the year after the summer.
I'd die if they headline Gathering Of The Vibes Music Festival, as my friends and I are strongly considering going. Once the lineup's announced I'll make a decision.
As for ticket prices, I think they're very reasonable. I've never seen Phish, but assuming they end at 11:00 PM, that means they play for three hours (assuming intermission is thirty minutes). On top of that, they have one of the best light shows I've ever seen (on YouTube, of course), and their musicianship and overall performance is nearly unmatched. Not to mention the whole 'party' atmosphere at the show. I'm not directly referencing drugs, since it's a party either way. Everyone dances, there are balloons (on New Year's Eve, at least), glow sticks, confetti, etc... Again this all from my video-watching and reading concert reviews, but yeah.